diff --git a/Telegram/SourceFiles/calls/calls_group_panel.cpp b/Telegram/SourceFiles/calls/calls_group_panel.cpp
index 1a91692e7..f75d7de2c 100644
--- a/Telegram/SourceFiles/calls/calls_group_panel.cpp
+++ b/Telegram/SourceFiles/calls/calls_group_panel.cpp
@@ -255,9 +255,7 @@ void GroupPanel::initWindow() {
 	_window->setWindowIcon(
 		QIcon(QPixmap::fromImage(Image::Empty()->original(), Qt::ColorOnly)));
 	_window->setTitleStyle(st::callTitle);
-	_window->setTitle(computeTitleRect()
-		? u" "_q
-		: tr::lng_group_call_title(tr::now));
+	_window->setTitle(tr::lng_group_call_title(tr::now));
 
 	base::install_event_filter(_window.get(), [=](not_null<QEvent*> e) {
 		if (e->type() == QEvent::Close && handleClose()) {
@@ -590,7 +588,6 @@ void GroupPanel::refreshTitle() {
 				tr::lng_group_call_title(),
 				st::groupCallHeaderLabel);
 			_title->setAttribute(Qt::WA_TransparentForMouseEvents);
-			_window->setTitle(u" "_q);
 		}
 		const auto best = _title->naturalWidth();
 		const auto from = (widget()->width() - best) / 2;
@@ -611,7 +608,6 @@ void GroupPanel::refreshTitle() {
 		}
 	} else if (_title) {
 		_title.destroy();
-		_window->setTitle(tr::lng_group_call_title(tr::now));
 	}
 }
 
diff --git a/Telegram/SourceFiles/calls/calls_group_settings.cpp b/Telegram/SourceFiles/calls/calls_group_settings.cpp
index 5a4246c16..5d1383303 100644
--- a/Telegram/SourceFiles/calls/calls_group_settings.cpp
+++ b/Telegram/SourceFiles/calls/calls_group_settings.cpp
@@ -101,10 +101,6 @@ void GroupCallSettingsBox(
 		AddSkip(layout);
 	}
 
-	state->levelUpdateTimer.callEach(kMicTestUpdateInterval);
-	state->micTester = std::make_unique<Webrtc::AudioInputTester>(
-		settings.callInputDeviceId());
-
 	AddButtonWithLabel(
 		layout,
 		tr::lng_group_call_speakers(),
@@ -136,7 +132,9 @@ void GroupCallSettingsBox(
 				const QString &id,
 				const QString &name) {
 			state->inputNameStream.fire_copy(name);
-			state->micTester->setDeviceId(id);
+			if (state->micTester) {
+				state->micTester->setDeviceId(id);
+			}
 		}), &st::groupCallCheckbox, &st::groupCallRadio));
 	});
 
@@ -214,6 +212,15 @@ void GroupCallSettingsBox(
 		});
 	}
 
+	box->setShowFinishedCallback([=] {
+		// Means we finished showing the box.
+		crl::on_main(box, [=] {
+			state->micTester = std::make_unique<Webrtc::AudioInputTester>(
+				Core::App().settings().callInputDeviceId());
+			state->levelUpdateTimer.callEach(kMicTestUpdateInterval);
+		});
+	});
+
 	box->setTitle(tr::lng_group_call_settings_title());
 	box->boxClosing(
 	) | rpl::start_with_next([=] {
diff --git a/Telegram/lib_ui b/Telegram/lib_ui
index c4df09733..7fd90cb38 160000
--- a/Telegram/lib_ui
+++ b/Telegram/lib_ui
@@ -1 +1 @@
-Subproject commit c4df097339aa7edf1d7aadde4df4a954971a3afb
+Subproject commit 7fd90cb38b6b1069af43039f93c991fffaf8ddea