Since Plasma 6 landed, there's a problem with LibreOffice Impress' state on startup. When it starts up, it shows a "Select a Template" window, which blocks interaction with the main window. However, almost always, the main window - not the "Select a Template" window - is active (this may be a timing thing; it's been causing the openQA test to fail consistently, testing locally, about 4 out of 5 times, it loads this way. The other time, the Select a Template window is active and things work as expected).

Unless you hit 'alt-tab' to activate the Select a Template window, this blocks some keyboard interaction - I think keypresses are being sent to the main window, but the Select a Template window is blocking interaction with it, so they do nothing. Tab does nothing, enter does nothing, alt-f4 does nothing (though hitting Esc does close the window). Hitting random letter keys seems to affect the category drop-down, but I can't find any way to actually cycle through the templates and select one, for instance.

I think the Select a Template window should always be active at startup (when it's configured to be shown at all).