Alas, I wish I could pinpoint it to this (or a comparable program) but this is a 'fresh' Windows 11 install with the bare essentials (Chrome, gfx drivers, Total Commander and so on...). I'm testdriving this "image" for about 2 weeks as it's a new system I've built and I want to be sure of its stability (before installing anything else).
But... your response got me thinking : I still have an unconfigured Stream Deck attached to this system and this might be culprit? Shooting arrows in the dark here but I couldn't say what might trigger that behaviour?
May I thank you for your professional followup? I won't take more of your time and should it reappear again, I will disconnect that Stream Deck and try to reproduce the error... And I will update this conversation accordingly :-)