Under Unity 2D, this happens for Qt apps as well -- though somehow differently: with Qt assistant, Alt+F works only every other time; or, if you keep the Alt key pressed, you need to press "F" *twice* in order to bring up the menu.
Under Unity 2D, this happens for Qt apps as well -- though somehow differently: with Qt assistant, Alt+F works only every other time; or, if you keep the Alt key pressed, you need to press "F" *twice* in order to bring up the menu.