diff --git a/Telegram/SourceFiles/core/core_settings.cpp b/Telegram/SourceFiles/core/core_settings.cpp
index c88373baf2..41be395dfb 100644
--- a/Telegram/SourceFiles/core/core_settings.cpp
+++ b/Telegram/SourceFiles/core/core_settings.cpp
@@ -94,7 +94,17 @@ QByteArray Settings::serialize() const {
 		}
 		stream
 			<< qint32(_autoDownloadDictionaries.current() ? 1 : 0)
-			<< qint32(_mainMenuAccountsShown.current() ? 1 : 0);
+			<< qint32(_mainMenuAccountsShown.current() ? 1 : 0)
+			<< qint32(_tabbedSelectorSectionEnabled ? 1 : 0)
+			<< qint32(_floatPlayerColumn)
+			<< qint32(_floatPlayerCorner)
+			<< qint32(_thirdSectionInfoEnabled ? 1 : 0)
+			<< qint32(snap(
+				qRound(_dialogsWidthRatio.current() * 1000000),
+				0,
+				1000000))
+			<< qint32(_thirdColumnWidth.current())
+			<< qint32(_thirdSectionExtendedBy);
 	}
 	return result;
 }
@@ -150,6 +160,13 @@ void Settings::addFromSerialized(const QByteArray &serialized) {
 	std::vector<int> dictionariesEnabled;
 	qint32 autoDownloadDictionaries = _autoDownloadDictionaries.current() ? 1 : 0;
 	qint32 mainMenuAccountsShown = _mainMenuAccountsShown.current() ? 1 : 0;
+	qint32 tabbedSelectorSectionEnabled = 1;
+	qint32 floatPlayerColumn = static_cast<qint32>(Window::Column::Second);
+	qint32 floatPlayerCorner = static_cast<qint32>(RectPart::TopRight);
+	qint32 thirdSectionInfoEnabled = 0;
+	float64 dialogsWidthRatio = _dialogsWidthRatio.current();
+	qint32 thirdColumnWidth = _thirdColumnWidth.current();
+	qint32 thirdSectionExtendedBy = _thirdSectionExtendedBy;
 
 	stream >> themesAccentColors;
 	if (!stream.atEnd()) {
@@ -211,6 +228,18 @@ void Settings::addFromSerialized(const QByteArray &serialized) {
 			>> autoDownloadDictionaries
 			>> mainMenuAccountsShown;
 	}
+	if (!stream.atEnd()) {
+		auto dialogsWidthRatioInt = qint32();
+		stream
+			>> tabbedSelectorSectionEnabled
+			>> floatPlayerColumn
+			>> floatPlayerCorner
+			>> thirdSectionInfoEnabled
+			>> dialogsWidthRatioInt
+			>> thirdColumnWidth
+			>> thirdSectionExtendedBy;
+		dialogsWidthRatio = snap(dialogsWidthRatioInt / 1000000., 0., 1.);
+	}
 	if (stream.status() != QDataStream::Ok) {
 		LOG(("App Error: "
 			"Bad data for Core::Settings::constructFromSerialized()"));
@@ -281,6 +310,27 @@ void Settings::addFromSerialized(const QByteArray &serialized) {
 	_dictionariesEnabled = std::move(dictionariesEnabled);
 	_autoDownloadDictionaries = (autoDownloadDictionaries == 1);
 	_mainMenuAccountsShown = (mainMenuAccountsShown == 1);
+	_tabbedSelectorSectionEnabled = (tabbedSelectorSectionEnabled == 1);
+	auto uncheckedColumn = static_cast<Window::Column>(floatPlayerColumn);
+	switch (uncheckedColumn) {
+	case Window::Column::First:
+	case Window::Column::Second:
+	case Window::Column::Third: _floatPlayerColumn = uncheckedColumn; break;
+	}
+	auto uncheckedCorner = static_cast<RectPart>(floatPlayerCorner);
+	switch (uncheckedCorner) {
+	case RectPart::TopLeft:
+	case RectPart::TopRight:
+	case RectPart::BottomLeft:
+	case RectPart::BottomRight: _floatPlayerCorner = uncheckedCorner; break;
+	}
+	_thirdSectionInfoEnabled = thirdSectionInfoEnabled;
+	_dialogsWidthRatio = dialogsWidthRatio;
+	_thirdColumnWidth = thirdColumnWidth;
+	_thirdSectionExtendedBy = thirdSectionExtendedBy;
+	if (_thirdSectionInfoEnabled) {
+		_tabbedSelectorSectionEnabled = false;
+	}
 }
 
 bool Settings::chatWide() const {
diff --git a/Telegram/SourceFiles/media/player/media_player_volume_controller.cpp b/Telegram/SourceFiles/media/player/media_player_volume_controller.cpp
index 135453ba5e..d21a1fbdcb 100644
--- a/Telegram/SourceFiles/media/player/media_player_volume_controller.cpp
+++ b/Telegram/SourceFiles/media/player/media_player_volume_controller.cpp
@@ -39,7 +39,7 @@ VolumeController::VolumeController(
 			Core::App().settings().setRememberedSongVolume(volume);
 		}
 		applyVolumeChange(volume);
-		controller->session().saveSettingsDelayed();
+		Core::App().saveSettingsDelayed();
 	});
 	Core::App().settings().songVolumeChanges(
 	) | rpl::start_with_next([=](float64 volume) {
diff --git a/Telegram/SourceFiles/media/player/media_player_widget.cpp b/Telegram/SourceFiles/media/player/media_player_widget.cpp
index 0bc26ebf43..f7fa56b8b8 100644
--- a/Telegram/SourceFiles/media/player/media_player_widget.cpp
+++ b/Telegram/SourceFiles/media/player/media_player_widget.cpp
@@ -132,6 +132,7 @@ Widget::Widget(QWidget *parent, not_null<Main::Session*> session)
 			? 0.
 			: Core::App().settings().rememberedSongVolume();
 		Core::App().settings().setSongVolume(volume);
+		Core::App().saveSettingsDelayed();
 		mixer()->setSongVolume(volume);
 	});
 	Core::App().settings().songVolumeChanges(
diff --git a/Telegram/SourceFiles/media/view/media_view_overlay_widget.cpp b/Telegram/SourceFiles/media/view/media_view_overlay_widget.cpp
index 322f606f9d..1700cba3da 100644
--- a/Telegram/SourceFiles/media/view/media_view_overlay_widget.cpp
+++ b/Telegram/SourceFiles/media/view/media_view_overlay_widget.cpp
@@ -2653,10 +2653,8 @@ void OverlayWidget::playbackControlsSeekFinished(crl::time position) {
 
 void OverlayWidget::playbackControlsVolumeChanged(float64 volume) {
 	Core::App().settings().setVideoVolume(volume);
+	Core::App().saveSettingsDelayed();
 	updateMixerVideoVolume();
-	if (_document) {
-		_document->session().saveSettingsDelayed();
-	}
 }
 
 float64 OverlayWidget::playbackControlsCurrentVolume() {
diff --git a/Telegram/SourceFiles/settings/settings_calls.cpp b/Telegram/SourceFiles/settings/settings_calls.cpp
index ddfbef47c1..01b1bf5fd7 100644
--- a/Telegram/SourceFiles/settings/settings_calls.cpp
+++ b/Telegram/SourceFiles/settings/settings_calls.cpp
@@ -52,7 +52,7 @@ Calls::Calls(
 
 Calls::~Calls() {
 	if (_needWriteSettings) {
-		_controller->session().saveSettingsDelayed();
+		Core::App().saveSettingsDelayed();
 	}
 }
 
@@ -134,7 +134,7 @@ void Calls::setupContent() {
 				: "default";
 			Core::App().settings().setCallOutputDeviceID(
 				QString::fromStdString(deviceId));
-			_controller->session().saveSettingsDelayed();
+			Core::App().saveSettingsDelayed();
 			if (const auto call = Core::App().calls().currentCall()) {
 				call->setCurrentAudioDevice(false, deviceId);
 			}
@@ -210,7 +210,7 @@ void Calls::setupContent() {
 				: "default";
 			Core::App().settings().setCallInputDeviceID(
 				QString::fromStdString(deviceId));
-			_controller->session().saveSettingsDelayed();
+			Core::App().saveSettingsDelayed();
 			if (_micTester) {
 				stopTestingMicrophone();
 			}