diff --git a/Telegram/SourceFiles/application.cpp b/Telegram/SourceFiles/application.cpp
index 149965ce4..3d297fc7e 100644
--- a/Telegram/SourceFiles/application.cpp
+++ b/Telegram/SourceFiles/application.cpp
@@ -455,6 +455,30 @@ bool Application::nativeEventFilter(
 	return false;
 }
 
+void Application::activateWindowDelayed(not_null<QWidget*> widget) {
+	if (_delayedActivationsPaused) {
+		return;
+	} else if (std::exchange(_windowForDelayedActivation, widget.get())) {
+		return;
+	}
+	crl::on_main(this, [=] {
+		if (const auto widget = base::take(_windowForDelayedActivation)) {
+			if (!widget->isHidden()) {
+				widget->activateWindow();
+			}
+		}
+	});
+}
+
+void Application::pauseDelayedWindowActivations() {
+	_windowForDelayedActivation = nullptr;
+	_delayedActivationsPaused = true;
+}
+
+void Application::resumeDelayedWindowActivations() {
+	_delayedActivationsPaused = false;
+}
+
 void Application::closeApplication() {
 	if (App::launchState() == App::QuitProcessed) return;
 	App::setLaunchState(App::QuitProcessed);
diff --git a/Telegram/SourceFiles/application.h b/Telegram/SourceFiles/application.h
index ad849ff2e..c58644571 100644
--- a/Telegram/SourceFiles/application.h
+++ b/Telegram/SourceFiles/application.h
@@ -29,6 +29,10 @@ public:
 	void postponeCall(FnMut<void()> &&callable);
 	bool notify(QObject *receiver, QEvent *e) override;
 
+	void activateWindowDelayed(not_null<QWidget*> widget);
+	void pauseDelayedWindowActivations();
+	void resumeDelayedWindowActivations();
+
 	~Application();
 
 signals:
@@ -73,6 +77,9 @@ private:
 	std::vector<int> _previousLoopNestingLevels;
 	std::vector<PostponedCall> _postponedCalls;
 
+	QPointer<QWidget> _windowForDelayedActivation;
+	bool _delayedActivationsPaused = false;
+
 	not_null<Core::Launcher*> _launcher;
 	std::unique_ptr<Messenger> _messengerInstance;
 
@@ -89,6 +96,16 @@ private:
 
 };
 
+namespace Core {
+
+inline Application &App() {
+	Expects(QCoreApplication::instance() != nullptr);
+
+	return *static_cast<Application*>(QCoreApplication::instance());
+}
+
+} // namespace Core
+
 namespace Sandbox {
 
 QRect availableGeometry();
diff --git a/Telegram/SourceFiles/core/file_utilities.cpp b/Telegram/SourceFiles/core/file_utilities.cpp
index 5783dcda3..9df8e7774 100644
--- a/Telegram/SourceFiles/core/file_utilities.cpp
+++ b/Telegram/SourceFiles/core/file_utilities.cpp
@@ -7,10 +7,18 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #include "core/file_utilities.h"
 
-#include "mainwindow.h"
 #include "storage/localstorage.h"
 #include "platform/platform_file_utilities.h"
 #include "messenger.h"
+#include "application.h"
+#include "mainwindow.h"
+
+void PreventWindowActivation() {
+	Core::App().pauseDelayedWindowActivations();
+	Core::App().postponeCall([] {
+		Core::App().resumeDelayedWindowActivations();
+	});
+}
 
 bool filedialogGetSaveFile(
 		QPointer<QWidget> parent,
@@ -20,6 +28,7 @@ bool filedialogGetSaveFile(
 		const QString &initialPath) {
 	QStringList files;
 	QByteArray remoteContent;
+	PreventWindowActivation();
 	bool result = Platform::FileDialog::Get(
 		parent,
 		files,
@@ -112,6 +121,7 @@ namespace File {
 
 void OpenEmailLink(const QString &email) {
 	crl::on_main([=] {
+		PreventWindowActivation();
 		Platform::File::UnsafeOpenEmailLink(email);
 	});
 }
@@ -119,6 +129,7 @@ void OpenEmailLink(const QString &email) {
 void OpenWith(const QString &filepath, QPoint menuPosition) {
 	InvokeQueued(QApplication::instance(), [=] {
 		if (!Platform::File::UnsafeShowOpenWithDropdown(filepath, menuPosition)) {
+			PreventWindowActivation();
 			if (!Platform::File::UnsafeShowOpenWith(filepath)) {
 				Platform::File::UnsafeLaunch(filepath);
 			}
@@ -128,12 +139,14 @@ void OpenWith(const QString &filepath, QPoint menuPosition) {
 
 void Launch(const QString &filepath) {
 	crl::on_main([=] {
+		PreventWindowActivation();
 		Platform::File::UnsafeLaunch(filepath);
 	});
 }
 
 void ShowInFolder(const QString &filepath) {
 	crl::on_main([=] {
+		PreventWindowActivation();
 		Platform::File::UnsafeShowInFolder(filepath);
 	});
 }
@@ -173,6 +186,7 @@ void GetOpenPath(
 	InvokeQueued(QApplication::instance(), [=] {
 		auto files = QStringList();
 		auto remoteContent = QByteArray();
+		PreventWindowActivation();
 		const auto success = Platform::FileDialog::Get(
 			parent,
 			files,
@@ -206,6 +220,7 @@ void GetOpenPaths(
 	InvokeQueued(QApplication::instance(), [=] {
 		auto files = QStringList();
 		auto remoteContent = QByteArray();
+		PreventWindowActivation();
 		const auto success = Platform::FileDialog::Get(
 			parent,
 			files,
@@ -254,6 +269,7 @@ void GetFolder(
 	InvokeQueued(QApplication::instance(), [=] {
 		auto files = QStringList();
 		auto remoteContent = QByteArray();
+		PreventWindowActivation();
 		const auto success = Platform::FileDialog::Get(
 			parent,
 			files,
diff --git a/Telegram/SourceFiles/history/history_widget.cpp b/Telegram/SourceFiles/history/history_widget.cpp
index bd6d5d20d..4a437e8df 100644
--- a/Telegram/SourceFiles/history/history_widget.cpp
+++ b/Telegram/SourceFiles/history/history_widget.cpp
@@ -112,13 +112,10 @@ ApiWrap::RequestMessageDataCallback replyEditMessageDataCallback() {
 	};
 }
 
-void ActivateWindowDelayed(not_null<Window::Controller*> controller) {
+void ActivateWindow(not_null<Window::Controller*> controller) {
 	const auto window = controller->window();
-	const auto weak = make_weak(window.get());
 	window->activateWindow();
-	crl::on_main(window, [=] {
-		window->activateWindow();
-	});
+	Core::App().activateWindowDelayed(window);
 }
 
 void InsertEmojiToField(not_null<Ui::InputField*> field, EmojiPtr emoji) {
@@ -353,11 +350,11 @@ HistoryWidget::HistoryWidget(
 
 	_attachDragDocument->setDroppedCallback([this](const QMimeData *data) {
 		confirmSendingFiles(data, CompressConfirm::No);
-		ActivateWindowDelayed(this->controller());
+		ActivateWindow(this->controller());
 	});
 	_attachDragPhoto->setDroppedCallback([this](const QMimeData *data) {
 		confirmSendingFiles(data, CompressConfirm::Yes);
-		ActivateWindowDelayed(this->controller());
+		ActivateWindow(this->controller());
 	});
 
 	connect(&_updateEditTimeLeftDisplay, SIGNAL(timeout()), this, SLOT(updateField()));
@@ -1247,7 +1244,7 @@ void HistoryWidget::onRecordDone(
 		qint32 samples) {
 	if (!canWriteMessage() || result.isEmpty()) return;
 
-	ActivateWindowDelayed(controller());
+	ActivateWindow(controller());
 	const auto duration = samples / Media::Player::kDefaultFrequency;
 	auto options = ApiWrap::SendOptions(_history);
 	options.replyTo = replyToId();
@@ -4047,7 +4044,7 @@ bool HistoryWidget::confirmSendingFiles(
 		}
 	}));
 
-	ActivateWindowDelayed(controller());
+	ActivateWindow(controller());
 	const auto shown = Ui::show(std::move(box));
 	shown->setCloseByOutsideClick(false);
 
@@ -4138,7 +4135,7 @@ bool HistoryWidget::confirmSendingFiles(
 void HistoryWidget::uploadFiles(
 		Storage::PreparedList &&list,
 		SendMediaType type) {
-	ActivateWindowDelayed(controller());
+	ActivateWindow(controller());
 
 	uploadFilesAfterConfirmation(
 		std::move(list),
diff --git a/Telegram/SourceFiles/ui/widgets/popup_menu.cpp b/Telegram/SourceFiles/ui/widgets/popup_menu.cpp
index 2c9adbefa..1ac1b367f 100644
--- a/Telegram/SourceFiles/ui/widgets/popup_menu.cpp
+++ b/Telegram/SourceFiles/ui/widgets/popup_menu.cpp
@@ -503,12 +503,8 @@ PopupMenu::~PopupMenu() {
 		delete submenu;
 	}
 	if (const auto parent = parentWidget()) {
-		if (qApp->focusWidget() != nullptr) {
-			crl::on_main(parent, [=] {
-				if (!parent->isHidden()) {
-					parent->activateWindow();
-				}
-			});
+		if (Core::App().focusWidget() != nullptr) {
+			Core::App().activateWindowDelayed(parent);
 		}
 	}
 	if (_destroyedCallback) {