processEvents(QEventLoop::ExcludeUserInputEvents) processes Global Menu Bar (MacOSX) events

Steps to reproduce:

• Open attached project
• Compile it and run it in debug mode
• In the app's menu bar, select File->New
• Select File->New one more time
• Pause the debugger and look at the call stack

The call stack should show that processEvents(...) processed the menu bar action even though it was supposed to exclude user input events.