telegram-desktop/0000-gtk2-default.patch

--- a/Telegram/SourceFiles/platform/linux/linux_libs.cpp.orig	2020-02-06 11:24:06.271620992 +0100
+++ b/Telegram/SourceFiles/platform/linux/linux_libs.cpp	2020-02-06 11:27:36.265427510 +0100
@@ -222,10 +222,10 @@ void start() {
 	bool isWayland = QGuiApplication::platformName().startsWith(qsl("wayland"), Qt::CaseInsensitive);
 	QLibrary lib_gtk;
 
-	if (loadLibrary(lib_gtk, "gtk-3", 0)) {
+	if (loadLibrary(lib_gtk, "gtk-x11-2.0", 0)) {
 		gtkLoaded = setupGtkBase(lib_gtk);
 	}
-	if (!gtkLoaded && !isWayland && loadLibrary(lib_gtk, "gtk-x11-2.0", 0)) {
+	if (!gtkLoaded && !isWayland && loadLibrary(lib_gtk, "gtk-3", 0)) {
 		gtkLoaded = setupGtkBase(lib_gtk);
 	}