Dear list, I believe, there is either a bug in X11 or KDE (plasma).
Following problem, do the following: - Start any browser like firefox or similar - go to youtube or soemwhere else and start a video - switch the video to fullscreen - now switch back, close the video - you will now see the browser too big for the screen (have to close with ALT+F4) I believe, this behaviour is caused as my screen resolution is not 16:10 as most screens are, but 16:9 (it is a laptop DELL Latitude 5400). Sadly my other external monitor oin my desktop computer is also 16:9, so I can not test it. This issue appeared first after upgrade to trixie. Last but not least: In wayland I could not not test it, because in wayland the behaviour of windows is completely other. Also: I do not want to use wayland, as it is not as fast and stable as X11 on this computer. IMHO this is a bug either in X11 or the window manager, which should be filed. But I m not sure, which is responsible for this behaviour. Best regards Hans P.S. If I am the only person with this issue, you need not to care. I can live with this.

