diff --git a/Telegram/SourceFiles/window/main_window.cpp b/Telegram/SourceFiles/window/main_window.cpp
index cf0c168b19..f9733b6a45 100644
--- a/Telegram/SourceFiles/window/main_window.cpp
+++ b/Telegram/SourceFiles/window/main_window.cpp
@@ -13,7 +13,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/platform/ui_platform_utility.h"
 #include "history/history.h"
 #include "window/themes/window_theme.h"
-#include "window/window_title_qt.h" // kShowAfterWindowFlagChangeDelay
 #include "window/window_session_controller.h"
 #include "window/window_lock_widgets.h"
 #include "window/window_outdated_bar.h"
@@ -365,20 +364,9 @@ void MainWindow::refreshTitleWidget() {
 		_titleShadow.destroy();
 	}
 
-#if defined Q_OS_UNIX && !defined Q_OS_MAC
-	// setWindowFlag calls setParent(parentWidget(), newFlags), which
-	// always calls hide() explicitly, we have to show() the window back.
-	const auto hidden = isHidden();
 	const auto withShadow = hasShadow();
-	setWindowFlag(Qt::NoDropShadowWindowHint, withShadow);
+	windowHandle()->setFlag(Qt::NoDropShadowWindowHint, withShadow);
 	setAttribute(Qt::WA_OpaquePaintEvent, !withShadow);
-	if (!hidden) {
-		base::call_delayed(
-			kShowAfterWindowFlagChangeDelay,
-			this,
-			[=] { show(); });
-	}
-#endif // Q_OS_UNIX && !Q_OS_MAC
 }
 
 void MainWindow::updateMinimumSize() {
diff --git a/Telegram/SourceFiles/window/window_title_qt.cpp b/Telegram/SourceFiles/window/window_title_qt.cpp
index fc210e1aa0..2dbc133b60 100644
--- a/Telegram/SourceFiles/window/window_title_qt.cpp
+++ b/Telegram/SourceFiles/window/window_title_qt.cpp
@@ -91,17 +91,7 @@ TitleWidgetQt::~TitleWidgetQt() {
 }
 
 void TitleWidgetQt::toggleFramelessWindow(bool enabled) {
-	// setWindowFlag calls setParent(parentWidget(), newFlags), which
-	// always calls hide() explicitly, we have to show() the window back.
-	const auto top = window();
-	const auto hidden = top->isHidden();
-	top->setWindowFlag(Qt::FramelessWindowHint, enabled);
-	if (!hidden) {
-		base::call_delayed(
-			kShowAfterWindowFlagChangeDelay,
-			top,
-			[=] { top->show(); });
-	}
+	window()->windowHandle()->setFlag(Qt::FramelessWindowHint, enabled);
 }
 
 void TitleWidgetQt::init() {
diff --git a/Telegram/SourceFiles/window/window_title_qt.h b/Telegram/SourceFiles/window/window_title_qt.h
index 126711e954..00b65cc094 100644
--- a/Telegram/SourceFiles/window/window_title_qt.h
+++ b/Telegram/SourceFiles/window/window_title_qt.h
@@ -22,12 +22,6 @@ class PlainShadow;
 
 namespace Window {
 
-// If we toggle frameless window hint in maximized window, and
-// show it back too quickly, the mouse position inside the window
-// won't be correct (from Qt-s point of view) until we Alt-Tab from
-// that window. If we show the window back with this delay it works.
-inline constexpr auto kShowAfterWindowFlagChangeDelay = crl::time(1000);
-
 class TitleWidgetQt : public TitleWidget {
 public:
 	TitleWidgetQt(QWidget *parent);