diff --git a/Telegram/SourceFiles/boxes/peers/edit_peer_invite_link.cpp b/Telegram/SourceFiles/boxes/peers/edit_peer_invite_link.cpp
index cc9288535..e3b09b2a4 100644
--- a/Telegram/SourceFiles/boxes/peers/edit_peer_invite_link.cpp
+++ b/Telegram/SourceFiles/boxes/peers/edit_peer_invite_link.cpp
@@ -66,7 +66,9 @@ void ShowPeerInfoSync(not_null<PeerData*> peer) {
 	// we can safely use activeWindow.
 	if (const auto window = Core::App().activeWindow()) {
 		if (const auto controller = window->sessionController()) {
-			controller->showPeerInfo(peer);
+			if (&controller->session() == &peer->session()) {
+				controller->showPeerInfo(peer);
+			}
 		}
 	}
 }
diff --git a/Telegram/SourceFiles/calls/group/calls_group_members.cpp b/Telegram/SourceFiles/calls/group/calls_group_members.cpp
index 5086768ad..a0957c74d 100644
--- a/Telegram/SourceFiles/calls/group/calls_group_members.cpp
+++ b/Telegram/SourceFiles/calls/group/calls_group_members.cpp
@@ -1198,7 +1198,7 @@ base::unique_qptr<Ui::PopupMenu> Members::Controller::createRowContextMenu(
 		if (const auto window = Core::App().separateWindowForPeer(
 				participantPeer)) {
 			return window->sessionController();
-		} else if (const auto window = Core::App().activeWindow()) {
+		} else if (const auto window = Core::App().primaryWindow()) {
 			if (const auto controller = window->sessionController()) {
 				if (&controller->session() == session) {
 					return controller;
diff --git a/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp b/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp
index cc1153612..dce3c91ce 100644
--- a/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp
+++ b/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp
@@ -1264,7 +1264,7 @@ object_ptr<TabbedSelector::InnerFooter> StickersListWidget::createFooter() {
 	_footer->openSettingsRequests(
 	) | rpl::start_with_next([=] {
 		const auto onlyFeatured = _footer->hasOnlyFeaturedSets();
-		Ui::show(Box<StickersBox>(
+		controller()->show(Box<StickersBox>(
 			controller(),
 			(onlyFeatured
 				? StickersBox::Section::Featured
diff --git a/Telegram/SourceFiles/core/application.cpp b/Telegram/SourceFiles/core/application.cpp
index 6095e8cdb..73a15994f 100644
--- a/Telegram/SourceFiles/core/application.cpp
+++ b/Telegram/SourceFiles/core/application.cpp
@@ -323,7 +323,7 @@ void Application::run() {
 
 	DEBUG_LOG(("Application Info: window created..."));
 
-	// Depend on activeWindow() for now :(
+	// Depend on primaryWindow() for now :(
 	startShortcuts();
 	startDomain();
 
@@ -1170,6 +1170,26 @@ Window::Controller *Application::activeWindow() const {
 	return _lastActiveWindow;
 }
 
+void Application::closeWindow(not_null<Window::Controller*> window) {
+	for (auto i = begin(_secondaryWindows); i != end(_secondaryWindows);) {
+		if (i->second.get() == window) {
+			if (_lastActiveWindow == window) {
+				_lastActiveWindow = _primaryWindow.get();
+			}
+			i = _secondaryWindows.erase(i);
+		} else {
+			++i;
+		}
+	}
+}
+
+void Application::windowActivated(not_null<Window::Controller*> window) {
+	_lastActiveWindow = window;
+	if (_mediaView && !_mediaView->isHidden()) {
+		_mediaView->activate();
+	}
+}
+
 bool Application::closeActiveWindow() {
 	if (hideMediaView()) {
 		return true;
@@ -1198,11 +1218,12 @@ bool Application::minimizeActiveWindow() {
 }
 
 QWidget *Application::getFileDialogParent() {
-	return (_mediaView && !_mediaView->isHidden())
-		? static_cast<QWidget*>(_mediaView->widget())
-		: activeWindow()
-		? static_cast<QWidget*>(activeWindow()->widget())
-		: nullptr;
+	if (const auto view = _mediaView.get(); view && !view->isHidden()) {
+		return view->widget();
+	} else if (const auto active = activeWindow()) {
+		return active->widget();
+	}
+	return nullptr;
 }
 
 void Application::notifyFileDialogShown(bool shown) {
@@ -1211,12 +1232,6 @@ void Application::notifyFileDialogShown(bool shown) {
 	}
 }
 
-void Application::checkMediaViewActivation() {
-	if (_mediaView && !_mediaView->isHidden()) {
-		_mediaView->activate();
-	}
-}
-
 QPoint Application::getPointForCallPanelCenter() const {
 	if (const auto window = activeWindow()) {
 		return window->getPointForCallPanelCenter();
diff --git a/Telegram/SourceFiles/core/application.h b/Telegram/SourceFiles/core/application.h
index 056ada5bd..26eea6f69 100644
--- a/Telegram/SourceFiles/core/application.h
+++ b/Telegram/SourceFiles/core/application.h
@@ -162,6 +162,8 @@ public:
 	Window::Controller *ensureSeparateWindowForPeer(
 		not_null<PeerData*> peer,
 		MsgId showAtMsgId);
+	void closeWindow(not_null<Window::Controller*> window);
+	void windowActivated(not_null<Window::Controller*> window);
 	bool closeActiveWindow();
 	bool minimizeActiveWindow();
 	[[nodiscard]] QWidget *getFileDialogParent();
@@ -170,7 +172,6 @@ public:
 	[[nodiscard]] bool isActiveForTrayMenu() const;
 
 	// Media view interface.
-	void checkMediaViewActivation();
 	bool hideMediaView();
 
 	[[nodiscard]] QPoint getPointForCallPanelCenter() const;
diff --git a/Telegram/SourceFiles/core/core_settings.h b/Telegram/SourceFiles/core/core_settings.h
index 94a678d2c..e866838a9 100644
--- a/Telegram/SourceFiles/core/core_settings.h
+++ b/Telegram/SourceFiles/core/core_settings.h
@@ -44,8 +44,6 @@ enum class OrderMode;
 namespace Core {
 
 struct WindowPosition {
-	WindowPosition() = default;
-
 	int32 moncrc = 0;
 	int maximized = 0;
 	int scale = 0;
diff --git a/Telegram/SourceFiles/dialogs/dialogs_inner_widget.cpp b/Telegram/SourceFiles/dialogs/dialogs_inner_widget.cpp
index 1d529c0a6..dcfea87a4 100644
--- a/Telegram/SourceFiles/dialogs/dialogs_inner_widget.cpp
+++ b/Telegram/SourceFiles/dialogs/dialogs_inner_widget.cpp
@@ -35,6 +35,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/stickers/data_stickers.h"
 #include "data/data_send_action.h"
 #include "base/unixtime.h"
+#include "base/options.h"
 #include "lang/lang_keys.h"
 #include "mainwindow.h"
 #include "mainwidget.h"
@@ -64,6 +65,13 @@ namespace {
 constexpr auto kHashtagResultsLimit = 5;
 constexpr auto kStartReorderThreshold = 30;
 
+base::options::toggle TabbedPanelShowOnClick({
+	.id = kOptionCtrlClickChatNewWindow,
+	.name = "New chat window by Ctrl+Click",
+	.description = "Open chat in a new window by Ctrl+Click "
+	"(Cmd+Click on macOS).",
+});
+
 int FixedOnTopDialogsCount(not_null<Dialogs::IndexedList*> list) {
 	auto result = 0;
 	for (const auto &row : *list) {
@@ -92,6 +100,8 @@ int PinnedDialogsCount(
 
 } // namespace
 
+const char kOptionCtrlClickChatNewWindow[] = "ctrl-click-chat-new-window";
+
 struct InnerWidget::CollapsedRow {
 	CollapsedRow(Data::Folder *folder) : folder(folder) {
 	}
@@ -2801,9 +2811,9 @@ bool InnerWidget::chooseRow(Qt::KeyboardModifiers modifiers) {
 	const auto modifyChosenRow = [](
 			ChosenRow row,
 			Qt::KeyboardModifiers modifiers) {
-#ifdef _DEBUG
-		row.newWindow = (modifiers & Qt::ControlModifier);
-#endif
+		if (TabbedPanelShowOnClick.value()) {
+			row.newWindow = (modifiers & Qt::ControlModifier);
+		}
 		return row;
 	};
 	const auto chosen = modifyChosenRow(computeChosenRow(), modifiers);
diff --git a/Telegram/SourceFiles/dialogs/dialogs_inner_widget.h b/Telegram/SourceFiles/dialogs/dialogs_inner_widget.h
index 9fb221eea..e7c248b39 100644
--- a/Telegram/SourceFiles/dialogs/dialogs_inner_widget.h
+++ b/Telegram/SourceFiles/dialogs/dialogs_inner_widget.h
@@ -45,6 +45,8 @@ class VideoUserpic;
 
 namespace Dialogs {
 
+extern const char kOptionCtrlClickChatNewWindow[];
+
 class Row;
 class FakeRow;
 class IndexedList;
diff --git a/Telegram/SourceFiles/history/view/history_view_react_button.cpp b/Telegram/SourceFiles/history/view/history_view_react_button.cpp
index a87a2139a..259a3dbe0 100644
--- a/Telegram/SourceFiles/history/view/history_view_react_button.cpp
+++ b/Telegram/SourceFiles/history/view/history_view_react_button.cpp
@@ -479,7 +479,11 @@ void Manager::applyListFilters() {
 			if (icon.premium
 				&& !_allowSendingPremium
 				&& !_buttonAlreadyList.contains(emoji)) {
-				showPremiumLock = &icon;
+				if (_premiumPossible) {
+					showPremiumLock = &icon;
+				} else {
+					clearStateForHidden(icon);
+				}
 			} else {
 				icon.premiumLock = false;
 				if (emoji == _favorite) {
@@ -572,7 +576,10 @@ void Manager::showButtonDelayed() {
 
 void Manager::applyList(
 		const std::vector<Data::Reaction> &list,
-		const QString &favorite) {
+		const QString &favorite,
+		bool premiumPossible) {
+	const auto possibleChanged = (_premiumPossible != premiumPossible);
+	_premiumPossible = premiumPossible;
 	const auto proj = [](const auto &obj) {
 		return std::tie(
 			obj.emoji,
@@ -585,7 +592,7 @@ void Manager::applyList(
 		_favorite = favorite;
 	}
 	if (ranges::equal(_list, list, ranges::equal_to(), proj, proj)) {
-		if (favoriteChanged) {
+		if (favoriteChanged || possibleChanged) {
 			applyListFilters();
 		}
 		return;
@@ -1659,7 +1666,8 @@ void SetupManagerList(
 	) | rpl::start_with_next([=] {
 		manager->applyList(
 			reactions->list(Data::Reactions::Type::Active),
-			reactions->favorite());
+			reactions->favorite(),
+			session->premiumPossible());
 	}, manager->lifetime());
 
 	std::move(
diff --git a/Telegram/SourceFiles/history/view/history_view_react_button.h b/Telegram/SourceFiles/history/view/history_view_react_button.h
index 6768deb5c..b3f728193 100644
--- a/Telegram/SourceFiles/history/view/history_view_react_button.h
+++ b/Telegram/SourceFiles/history/view/history_view_react_button.h
@@ -147,7 +147,8 @@ public:
 
 	void applyList(
 		const std::vector<Data::Reaction> &list,
-		const QString &favorite);
+		const QString &favorite,
+		bool premiumPossible);
 	void updateAllowedSublist(AllowedSublist filter);
 	void updateAllowSendingPremium(bool allow);
 	[[nodiscard]] const AllowedSublist &allowedSublist() const;
@@ -348,6 +349,7 @@ private:
 	rpl::lifetime _loadCacheLifetime;
 	bool _showingAll = false;
 	bool _allowSendingPremium = false;
+	bool _premiumPossible = false;
 	mutable int _selectedIcon = -1;
 
 	std::optional<ButtonParameters> _scheduledParameters;
diff --git a/Telegram/SourceFiles/history/view/history_view_top_bar_widget.cpp b/Telegram/SourceFiles/history/view/history_view_top_bar_widget.cpp
index 6f1fa6027..7dc301bfa 100644
--- a/Telegram/SourceFiles/history/view/history_view_top_bar_widget.cpp
+++ b/Telegram/SourceFiles/history/view/history_view_top_bar_widget.cpp
@@ -84,6 +84,7 @@ TopBarWidget::TopBarWidget(
 	not_null<Window::SessionController*> controller)
 : RpWidget(parent)
 , _controller(controller)
+, _primaryWindow(controller->isPrimary())
 , _clear(this, tr::lng_selected_clear(), st::topBarClearButton)
 , _forward(this, tr::lng_selected_forward(), st::defaultActiveButton)
 , _sendNow(this, tr::lng_selected_send_now(), st::defaultActiveButton)
@@ -846,10 +847,10 @@ void TopBarWidget::updateControlsGeometry() {
 		_leftTaken = smallDialogsColumn ? (width() - _back->width()) / 2 : 0;
 		_back->moveToLeft(_leftTaken, otherButtonsTop);
 		_leftTaken += _back->width();
-		if (_info && !_info->isHidden()) {
-			_info->moveToLeft(_leftTaken, otherButtonsTop);
-			_leftTaken += _info->width();
-		}
+	}
+	if (_info && !_info->isHidden()) {
+		_info->moveToLeft(_leftTaken, otherButtonsTop);
+		_leftTaken += _info->width();
 	}
 
 	_rightTaken = 0;
@@ -908,7 +909,8 @@ void TopBarWidget::updateControlsVisibility() {
 	_back->setVisible(backVisible && !_chooseForReportReason);
 	_cancelChoose->setVisible(_chooseForReportReason.has_value());
 	if (_info) {
-		_info->setVisible(isOneColumn && !_chooseForReportReason);
+		_info->setVisible((isOneColumn || !_primaryWindow)
+			&& !_chooseForReportReason);
 	}
 	if (_unreadBadge) {
 		_unreadBadge->setVisible(!_chooseForReportReason);
diff --git a/Telegram/SourceFiles/history/view/history_view_top_bar_widget.h b/Telegram/SourceFiles/history/view/history_view_top_bar_widget.h
index 79434c71a..83626b752 100644
--- a/Telegram/SourceFiles/history/view/history_view_top_bar_widget.h
+++ b/Telegram/SourceFiles/history/view/history_view_top_bar_widget.h
@@ -153,6 +153,7 @@ private:
 	[[nodiscard]] bool showSelectedActions() const;
 
 	const not_null<Window::SessionController*> _controller;
+	const bool _primaryWindow = false;
 	ActiveChat _activeChat;
 	QString _customTitleText;
 	std::unique_ptr<EmojiInteractionSeenAnimation> _emojiInteractionSeen;
diff --git a/Telegram/SourceFiles/mainwidget.cpp b/Telegram/SourceFiles/mainwidget.cpp
index 80f0f32c5..6430afecb 100644
--- a/Telegram/SourceFiles/mainwidget.cpp
+++ b/Telegram/SourceFiles/mainwidget.cpp
@@ -1912,7 +1912,7 @@ QPixmap MainWidget::grabForShowAnimation(const Window::SectionSlideParams &param
 		result = Ui::GrabWidget(this, QRect(
 			0,
 			sectionTop,
-			_dialogsWidth,
+			width(),
 			height() - sectionTop));
 	} else {
 		if (_sideShadow) {
@@ -2163,7 +2163,7 @@ void MainWidget::updateControlsGeometry() {
 	auto dialogsWidth = _dialogs
 		? qRound(_a_dialogsWidth.value(_dialogsWidth))
 		: isOneColumn()
-		? _dialogsWidth
+		? width()
 		: 0;
 	if (isOneColumn()) {
 		if (_callTopBar) {
@@ -2276,7 +2276,7 @@ void MainWidget::updateControlsGeometry() {
 }
 
 void MainWidget::refreshResizeAreas() {
-	if (!isOneColumn()) {
+	if (!isOneColumn() && _dialogs) {
 		ensureFirstColumnResizeAreaCreated();
 		_firstColumnResizeArea->setGeometryToLeft(
 			_history->x(),
@@ -2314,6 +2314,8 @@ void MainWidget::createResizeArea(
 }
 
 void MainWidget::ensureFirstColumnResizeAreaCreated() {
+	Expects(_dialogs != nullptr);
+
 	if (_firstColumnResizeArea) {
 		return;
 	}
diff --git a/Telegram/SourceFiles/mainwindow.cpp b/Telegram/SourceFiles/mainwindow.cpp
index c6ec4b9e0..01671385e 100644
--- a/Telegram/SourceFiles/mainwindow.cpp
+++ b/Telegram/SourceFiles/mainwindow.cpp
@@ -127,20 +127,22 @@ void MainWindow::applyInitialWorkMode() {
 	const auto workMode = Core::App().settings().workMode();
 	workmodeUpdated(workMode);
 
-	if (Core::App().settings().windowPosition().maximized) {
-		DEBUG_LOG(("Window Pos: First show, setting maximized."));
-		setWindowState(Qt::WindowMaximized);
-	}
-	if (cStartInTray()
-		|| (cLaunchMode() == LaunchModeAutoStart
-			&& cStartMinimized()
-			&& !Core::App().passcodeLocked())) {
-		DEBUG_LOG(("Window Pos: First show, setting minimized after."));
-		if (workMode == Core::Settings::WorkMode::TrayOnly
-			|| workMode == Core::Settings::WorkMode::WindowAndTray) {
-			hide();
-		} else {
-			setWindowState(windowState() | Qt::WindowMinimized);
+	if (controller().isPrimary()) {
+		if (Core::App().settings().windowPosition().maximized) {
+			DEBUG_LOG(("Window Pos: First show, setting maximized."));
+			setWindowState(Qt::WindowMaximized);
+		}
+		if (!cStartInTray()
+			|| (cLaunchMode() == LaunchModeAutoStart
+				&& cStartMinimized()
+				&& !Core::App().passcodeLocked())) {
+			DEBUG_LOG(("Window Pos: First show, setting minimized after."));
+			if (workMode == Core::Settings::WorkMode::TrayOnly
+				|| workMode == Core::Settings::WorkMode::WindowAndTray) {
+				hide();
+			} else {
+				setWindowState(windowState() | Qt::WindowMinimized);
+			}
 		}
 	}
 	setPositionInited();
@@ -645,22 +647,28 @@ void MainWindow::closeEvent(QCloseEvent *e) {
 	if (Core::Sandbox::Instance().isSavingSession() || Core::Quitting()) {
 		e->accept();
 		Core::Quit();
-	} else {
-		e->ignore();
-		const auto hasAuth = [&] {
-			if (!Core::App().domain().started()) {
-				return false;
-			}
-			for (const auto &[_, account] : Core::App().domain().accounts()) {
-				if (account->sessionExists()) {
-					return true;
-				}
-			}
+		return;
+	} else if (!isPrimary()) {
+		e->accept();
+		crl::on_main(this, [=] {
+			Core::App().closeWindow(&controller());
+		});
+		return;
+	}
+	e->ignore();
+	const auto hasAuth = [&] {
+		if (!Core::App().domain().started()) {
 			return false;
-		}();
-		if (!hasAuth || !hideNoQuit()) {
-			Core::Quit();
 		}
+		for (const auto &[_, account] : Core::App().domain().accounts()) {
+			if (account->sessionExists()) {
+				return true;
+			}
+		}
+		return false;
+	}();
+	if (!hasAuth || !hideNoQuit()) {
+		Core::Quit();
 	}
 }
 
diff --git a/Telegram/SourceFiles/platform/mac/touchbar/items/mac_pinned_chats_item.mm b/Telegram/SourceFiles/platform/mac/touchbar/items/mac_pinned_chats_item.mm
index 09d9b9c90..e72770fc0 100644
--- a/Telegram/SourceFiles/platform/mac/touchbar/items/mac_pinned_chats_item.mm
+++ b/Telegram/SourceFiles/platform/mac/touchbar/items/mac_pinned_chats_item.mm
@@ -768,7 +768,7 @@ TimeId CalculateOnlineTill(not_null<PeerData*> peer) {
 		return;
 	}
 
-	const auto active = Core::App().activeWindow();
+	const auto active = Core::App().primaryWindow();
 	const auto controller = active ? active->sessionController() : nullptr;
 	const auto openFolder = [=] {
 		const auto folder = _session->data().folderLoaded(Data::Folder::kId);
diff --git a/Telegram/SourceFiles/settings/settings_experimental.cpp b/Telegram/SourceFiles/settings/settings_experimental.cpp
index 22f382ff9..e5d2e21ea 100644
--- a/Telegram/SourceFiles/settings/settings_experimental.cpp
+++ b/Telegram/SourceFiles/settings/settings_experimental.cpp
@@ -16,6 +16,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "base/options.h"
 #include "core/application.h"
 #include "chat_helpers/tabbed_panel.h"
+#include "dialogs/dialogs_inner_widget.h"
 #include "history/history_widget.h"
 #include "lang/lang_keys.h"
 #include "media/player/media_player_instance.h"
@@ -134,6 +135,7 @@ void SetupExperimental(
 
 	addToggle(ChatHelpers::kOptionTabbedPanelShowOnClick);
 	addToggle(Window::kOptionViewProfileInChatsListContextMenu);
+	addToggle(Dialogs::kOptionCtrlClickChatNewWindow);
 	addToggle(Ui::GL::kOptionAllowLinuxNvidiaOpenGL);
 	addToggle(Media::Player::kOptionDisableAutoplayNext);
 	addToggle(Settings::kOptionMonoSettingsIcons);
diff --git a/Telegram/SourceFiles/window/main_window.cpp b/Telegram/SourceFiles/window/main_window.cpp
index 0d72f3d25..bb5509556 100644
--- a/Telegram/SourceFiles/window/main_window.cpp
+++ b/Telegram/SourceFiles/window/main_window.cpp
@@ -489,7 +489,7 @@ void MainWindow::handleStateChanged(Qt::WindowState state) {
 
 void MainWindow::handleActiveChanged() {
 	if (isActiveWindow()) {
-		Core::App().checkMediaViewActivation();
+		Core::App().windowActivated(&controller());
 	}
 }
 
@@ -737,10 +737,9 @@ void MainWindow::initGeometry() {
 	if (initGeometryFromSystem()) {
 		return;
 	}
-	// #TODO windows
 	const auto geometry = countInitialGeometry(isPrimary()
 		? positionFromSettings()
-		: Core::WindowPosition());
+		: SecondaryInitPosition());
 	DEBUG_LOG(("Window Pos: Setting first %1, %2, %3, %4"
 		).arg(geometry.x()
 		).arg(geometry.y()
@@ -836,30 +835,7 @@ void MainWindow::savePosition(Qt::WindowState state) {
 		realPosition.moncrc = 0;
 
 		DEBUG_LOG(("Window Pos: Saving non-maximized position: %1, %2, %3, %4").arg(realPosition.x).arg(realPosition.y).arg(realPosition.w).arg(realPosition.h));
-
-		auto centerX = realPosition.x + realPosition.w / 2;
-		auto centerY = realPosition.y + realPosition.h / 2;
-		int minDelta = 0;
-		QScreen *chosen = nullptr;
-		const auto screens = QGuiApplication::screens();
-		for (auto screen : screens) {
-			auto delta = (screen->geometry().center() - QPoint(centerX, centerY)).manhattanLength();
-			if (!chosen || delta < minDelta) {
-				minDelta = delta;
-				chosen = screen;
-			}
-		}
-		if (chosen) {
-			auto screenGeometry = chosen->geometry();
-			DEBUG_LOG(("Window Pos: Screen found, geometry: %1, %2, %3, %4"
-				).arg(screenGeometry.x()
-				).arg(screenGeometry.y()
-				).arg(screenGeometry.width()
-				).arg(screenGeometry.height()));
-			realPosition.x -= screenGeometry.x();
-			realPosition.y -= screenGeometry.y();
-			realPosition.moncrc = screenNameChecksum(chosen->name());
-		}
+		realPosition = withScreenInPosition(realPosition);
 	}
 	if (realPosition.w >= st::windowMinWidth && realPosition.h >= st::windowMinHeight) {
 		if (realPosition.x != savedPosition.x
@@ -882,6 +858,51 @@ void MainWindow::savePosition(Qt::WindowState state) {
 	}
 }
 
+Core::WindowPosition MainWindow::withScreenInPosition(
+		Core::WindowPosition position) const {
+	auto centerX = position.x + position.w / 2;
+	auto centerY = position.y + position.h / 2;
+	int minDelta = 0;
+	QScreen *chosen = nullptr;
+	const auto screens = QGuiApplication::screens();
+	for (auto screen : screens) {
+		auto delta = (screen->geometry().center() - QPoint(centerX, centerY)).manhattanLength();
+		if (!chosen || delta < minDelta) {
+			minDelta = delta;
+			chosen = screen;
+		}
+	}
+	if (!chosen) {
+		return position;
+	}
+	auto screenGeometry = chosen->geometry();
+	DEBUG_LOG(("Window Pos: Screen found, geometry: %1, %2, %3, %4"
+		).arg(screenGeometry.x()
+		).arg(screenGeometry.y()
+		).arg(screenGeometry.width()
+		).arg(screenGeometry.height()));
+	position.x -= screenGeometry.x();
+	position.y -= screenGeometry.y();
+	position.moncrc = screenNameChecksum(chosen->name());
+	return position;
+}
+
+Core::WindowPosition MainWindow::SecondaryInitPosition() {
+	const auto active = Core::App().activeWindow();
+	if (!active) {
+		return {};
+	}
+	const auto geometry = active->widget()->geometry();
+	const auto skip = st::windowMinWidth / 6;
+	return active->widget()->withScreenInPosition({
+		.scale = cScale(),
+		.x = geometry.x() + skip,
+		.y = geometry.y() + skip,
+		.w = st::windowMinWidth,
+		.h = st::windowDefaultHeight,
+	});
+}
+
 bool MainWindow::minimizeToTray() {
 	if (Core::Quitting()/* || !hasTrayIcon()*/) {
 		return false;
diff --git a/Telegram/SourceFiles/window/main_window.h b/Telegram/SourceFiles/window/main_window.h
index 72f4f208b..e2103734e 100644
--- a/Telegram/SourceFiles/window/main_window.h
+++ b/Telegram/SourceFiles/window/main_window.h
@@ -75,6 +75,9 @@ public:
 	void activate();
 
 	[[nodiscard]] QRect desktopRect() const;
+	[[nodiscard]] Core::WindowPosition withScreenInPosition(
+		Core::WindowPosition position) const;
+	[[nodiscard]] static Core::WindowPosition SecondaryInitPosition();
 
 	void init();
 
diff --git a/Telegram/SourceFiles/window/window_controller.cpp b/Telegram/SourceFiles/window/window_controller.cpp
index b4c42271d..909f83ce4 100644
--- a/Telegram/SourceFiles/window/window_controller.cpp
+++ b/Telegram/SourceFiles/window/window_controller.cpp
@@ -96,6 +96,10 @@ void Controller::showAccount(
 
 	_account->sessionValue(
 	) | rpl::start_with_next([=](Main::Session *session) {
+		if (!session && !isPrimary()) {
+			Core::App().closeWindow(this);
+			return;
+		}
 		const auto was = base::take(_sessionController);
 		_sessionController = session
 			? std::make_unique<SessionController>(session, this)
@@ -119,9 +123,6 @@ void Controller::showAccount(
 			}, _sessionController->lifetime());
 
 			widget()->setInnerFocus();
-		} else if (!isPrimary()) {
-			// #TODO windows test
-			close();
 		} else {
 			setupIntro();
 			_widget.updateGlobalMenu();
@@ -230,7 +231,7 @@ void Controller::showTermsDelete() {
 		if (const auto session = account().maybeSession()) {
 			session->termsDeleteNow();
 		} else {
-			Ui::hideLayer();
+			hideLayer();
 		}
 	};
 	show(
@@ -327,6 +328,10 @@ void Controller::showRightColumn(object_ptr<TWidget> widget) {
 	_widget.showRightColumn(std::move(widget));
 }
 
+void Controller::hideLayer(anim::type animated) {
+	_widget.ui_showBox({ nullptr }, Ui::LayerOption::CloseOther, animated);
+}
+
 void Controller::hideSettingsAndLayer(anim::type animated) {
 	_widget.ui_hideSettingsAndLayer(animated);
 }
diff --git a/Telegram/SourceFiles/window/window_controller.h b/Telegram/SourceFiles/window/window_controller.h
index 517520b37..01cb58fa8 100644
--- a/Telegram/SourceFiles/window/window_controller.h
+++ b/Telegram/SourceFiles/window/window_controller.h
@@ -83,6 +83,7 @@ public:
 
 	void showRightColumn(object_ptr<TWidget> widget);
 
+	void hideLayer(anim::type animated = anim::type::normal);
 	void hideSettingsAndLayer(anim::type animated = anim::type::normal);
 
 	void activate();
diff --git a/Telegram/SourceFiles/window/window_session_controller.cpp b/Telegram/SourceFiles/window/window_session_controller.cpp
index 68ed7c4e8..5ced17ff1 100644
--- a/Telegram/SourceFiles/window/window_session_controller.cpp
+++ b/Telegram/SourceFiles/window/window_session_controller.cpp
@@ -243,7 +243,7 @@ void SessionNavigation::resolveDone(
 		const MTPcontacts_ResolvedPeer &result,
 		Fn<void(not_null<PeerData*>)> done) {
 	_resolveRequestId = 0;
-	Ui::hideLayer();
+	parentController()->hideLayer();
 	result.match([&](const MTPDcontacts_resolvedPeer &data) {
 		_session->data().processUsers(data.vusers());
 		_session->data().processChats(data.vchats());
@@ -598,6 +598,7 @@ SessionController::SessionController(
 , _window(window)
 , _emojiInteractions(
 	std::make_unique<ChatHelpers::EmojiInteractions>(session))
+, _isPrimary(window->isPrimary())
 , _sendingAnimation(
 	std::make_unique<Ui::MessageSendingAnimationController>(this))
 , _tabbedSelector(
@@ -700,7 +701,7 @@ PeerData *SessionController::singlePeer() const {
 }
 
 bool SessionController::isPrimary() const {
-	return _window->isPrimary();
+	return _isPrimary;
 }
 
 not_null<::MainWindow*> SessionController::widget() const {
@@ -762,7 +763,7 @@ void SessionController::initSupportMode() {
 }
 
 void SessionController::toggleFiltersMenu(bool enabled) {
-	if (!isPrimary() || (!enabled == !_filters)) {
+	if (!_isPrimary || (!enabled == !_filters)) {
 		return;
 	} else if (enabled) {
 		_filters = std::make_unique<FiltersMenu>(
@@ -1009,7 +1010,7 @@ int SessionController::dialogsSmallColumnWidth() const {
 }
 
 int SessionController::minimalThreeColumnWidth() const {
-	return st::columnMinimalWidthLeft
+	return (_isPrimary ? st::columnMinimalWidthLeft : 0)
 		+ st::columnMinimalWidthMain
 		+ st::columnMinimalWidthThird;
 }
@@ -1032,7 +1033,7 @@ auto SessionController::computeColumnLayout() const -> ColumnLayout {
 	auto useOneColumnLayout = [&] {
 		auto minimalNormal = st::columnMinimalWidthLeft
 			+ st::columnMinimalWidthMain;
-		if (bodyWidth < minimalNormal) {
+		if (_isPrimary && bodyWidth < minimalNormal) {
 			return true;
 		}
 		return false;
@@ -1074,6 +1075,9 @@ auto SessionController::computeColumnLayout() const -> ColumnLayout {
 }
 
 int SessionController::countDialogsWidthFromRatio(int bodyWidth) const {
+	if (!_isPrimary) {
+		return 0;
+	}
 	auto result = qRound(bodyWidth * Core::App().settings().dialogsWidthRatio());
 	accumulate_max(result, st::columnMinimalWidthLeft);
 //	accumulate_min(result, st::columnMaximalWidthLeft);
@@ -1102,8 +1106,8 @@ SessionController::ShrinkResult SessionController::shrinkDialogsAndThirdColumns(
 	if (thirdWidthNew < st::columnMinimalWidthThird) {
 		thirdWidthNew = st::columnMinimalWidthThird;
 		dialogsWidthNew = bodyWidth - thirdWidthNew - chatWidth;
-		Assert(dialogsWidthNew >= st::columnMinimalWidthLeft);
-	} else if (dialogsWidthNew < st::columnMinimalWidthLeft) {
+		Assert(!_isPrimary || dialogsWidthNew >= st::columnMinimalWidthLeft);
+	} else if (_isPrimary && dialogsWidthNew < st::columnMinimalWidthLeft) {
 		dialogsWidthNew = st::columnMinimalWidthLeft;
 		thirdWidthNew = bodyWidth - dialogsWidthNew - chatWidth;
 		Assert(thirdWidthNew >= st::columnMinimalWidthThird);
@@ -1240,8 +1244,8 @@ void SessionController::startOrJoinGroupCall(
 	const auto askConfirmation = [&](QString text, QString button) {
 		show(Ui::MakeConfirmBox({
 			.text = text,
-			.confirmed = crl::guard(this, [=, hash = args.joinHash] {
-				Ui::hideLayer();
+			.confirmed = crl::guard(this,[=, hash = args.joinHash] {
+				hideLayer();
 				startOrJoinGroupCall(peer, { hash, JoinConfirm::None });
 			}),
 			.confirmText = button,
@@ -1597,7 +1601,7 @@ QPointer<Ui::BoxContent> SessionController::show(
 }
 
 void SessionController::hideLayer(anim::type animated) {
-	show({ nullptr }, Ui::LayerOption::CloseOther, animated);
+	_window->hideLayer(animated);
 }
 
 void SessionController::openPhoto(
diff --git a/Telegram/SourceFiles/window/window_session_controller.h b/Telegram/SourceFiles/window/window_session_controller.h
index ade413772..e93c4bc8a 100644
--- a/Telegram/SourceFiles/window/window_session_controller.h
+++ b/Telegram/SourceFiles/window/window_session_controller.h
@@ -554,6 +554,7 @@ private:
 
 	const not_null<Controller*> _window;
 	const std::unique_ptr<ChatHelpers::EmojiInteractions> _emojiInteractions;
+	const bool _isPrimary = false;
 
 	using SendingAnimation = Ui::MessageSendingAnimationController;
 	const std::unique_ptr<SendingAnimation> _sendingAnimation;