Henri, I know you have mentioned a few times that the keyboard handling in the viewer is a 'cluster', to put it mildly. I am not sure if what I am observing is new behavior and/or even just isolated to me. It seems none of the <alt> + <shift> accelerator combos work. I see the menu item 'flash' as if the key combo is recognized but the action does not occur. Specifically, in the View menu, Joystick flycam and Show HUD attachments do not alter state when the combo is invoked. I am not sure what detail you may require but here is my current 'about/version info':