Gui: set Qt attributes in setupApplication()

src/Gui/Application.cpp

@@ -2250,11 +2250,8 @@ void Application::runApplication()
     // A new QApplication
     Base::Console().Log("Init: Creating Gui::Application and QApplication\n");
 
-    // if application not yet created by the splasher
     int argc = App::Application::GetARGC();
     GUISingleApplication mainApp(argc, App::Application::GetARGV());
-    // https://forum.freecad.org/viewtopic.php?f=3&t=15540
-    QApplication::setAttribute(Qt::AA_DontShowIconsInMenus, false);
 
     // Make sure that we use '.' as decimal point. See also
     // http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=559846

src/Gui/StartupProcess.cpp

@@ -107,6 +107,8 @@ void StartupProcess::setupApplication()
     // compression for tablet events here to solve that.
     QCoreApplication::setAttribute(Qt::AA_CompressTabletEvents);
 #endif
+    // https://forum.freecad.org/viewtopic.php?f=3&t=15540
+    QApplication::setAttribute(Qt::AA_DontShowIconsInMenus, false);
 }
 
 void StartupProcess::execute()