Found by openQA: https://openqa.opensuse.org/tests/4277216#step/live_installation/29 When using the window menu (alt-f3) to force a window to fullscreen, previous versions had a dialog that explained how to go back, as it's not obvious: https://openqa.opensuse.org/tests/4277983#step/live_installation/37 With kwin 6.1.0, that dialog appears to be gone.
Fwiw cannot reproduce on master, wayland -- the dialog is still shown.
Is it an X and a Wayland client? xdg-toplevel windows are assumed to support fullscreen mode (unless the plasma surface extension is installed which changes the window type), so you're unlikely to see the dialog for wayland windows. X11 apps should be still fine.
(In reply to Vlad Zahorodnii from comment #2) > Is it an X and a Wayland client? xdg-toplevel windows are assumed to support > fullscreen mode (unless the plasma surface extension is installed which > changes the window type), so you're unlikely to see the dialog for wayland > windows. X11 apps should be still fine. X11 I think. It's a Qt 5 application launched through xdg-su.
(In reply to Fabian Vogt from comment #3) > (In reply to Vlad Zahorodnii from comment #2) > > Is it an X and a Wayland client? xdg-toplevel windows are assumed to support > > fullscreen mode (unless the plasma surface extension is installed which > > changes the window type), so you're unlikely to see the dialog for wayland > > windows. X11 apps should be still fine. > > X11 I think. It's a Qt 5 application launched through xdg-su. Can you check the fullScreenable property of that window in kwin debug console?
(In reply to Vlad Zahorodnii from comment #4) > (In reply to Fabian Vogt from comment #3) > > (In reply to Vlad Zahorodnii from comment #2) > > > Is it an X and a Wayland client? xdg-toplevel windows are assumed to support > > > fullscreen mode (unless the plasma surface extension is installed which > > > changes the window type), so you're unlikely to see the dialog for wayland > > > windows. X11 apps should be still fine. > > > > X11 I think. It's a Qt 5 application launched through xdg-su. > > Can you check the fullScreenable property of that window in kwin debug > console? It's true. I just fullscreened the window with the debug console open and the dialog actually showed up. Maybe it's just behind the fullscreened window? I'm also not able to reproduce it manually ATM, I think I only managed it once. Could it be a race condition?
The dialog will be shown only if fullScreenable == false
MIght be a regression after https://invent.kde.org/plasma/kwin/-/commit/d25574e7c67d39b4583c613bb90ebc0fb636738f but Plasma/6.0 includes that change as well
(In reply to Vlad Zahorodnii from comment #6) > The dialog will be shown only if fullScreenable == false scratch that, I'm talking nonsense
kwin indeed attempts to show the dialog. maybe kdialog is broken
kdialog was broken on my machine.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/5947
Can you check that kdialog is working as expected or that it's installed?
(In reply to Vlad Zahorodnii from comment #12) > Can you check that kdialog is working as expected or that it's installed? Works fine. Meanwhile I've seen some openQA runs where the dialog appears. I'll schedule some more tests with some changed settings, maybe I can spot a pattern.
(In reply to Fabian Vogt from comment #13) > (In reply to Vlad Zahorodnii from comment #12) > > Can you check that kdialog is working as expected or that it's installed? > > Works fine. Meanwhile I've seen some openQA runs where the dialog appears. > I'll schedule some more tests with some changed settings, maybe I can spot a > pattern. I threw more RAM at it (from 2G to 3G) and it showed up in 4/4 runs. AFAICT it shouldn't need that much to run, so I'll try to investigate what's hogging RAM use. Meanwhile I'll close it as WORKSFORME.