Thanks, I can reproduce your last instructions. It really seems to be a bug in Windows, the focus goes "nowhere". Alt+F4 or Alt+Space bar do nothing. I tried finding out where the focus goes with the Microsoft tool Inspect32, but it reports no active window:
How found:Focus [o:0xFFFFFFFC,c:0x0]
Transient HWND event
Statistics: Posted by ghisler(Author) — 2024-09-27, 09:50 UTC