SUMMARY STEPS TO REPRODUCE 1. Click the window menu, which is on the top left of the window decoration by default, or press Alt+F3 2. Click more actions 3. Click "No Border" checkbox OBSERVED RESULT Window appears informing you that the only way to access the window decorations again is to press Alt+F3, with a checkbox that says "altf3warning", which prevents the window from opening again the next time you click "No Border" EXPECTED RESULT Window appears informing you that the only way to access the window decorations again is to press Alt+F3, with a checkbox that says "Do not show this box again" or similar message SOFTWARE/OS VERSIONS Linux/KDE Plasma: Solus 4.1 KDE Plasma Version: 5.19.4 KDE Frameworks Version: 5.72.0 Qt Version: 5.14.2
Ugh this thing builds up a list of args and pipes them into kdialog instead of using the KMessageBox API, how horrible. The bug is that the order and number of args differs depending on the way kdialog is called, and it's not matching up. The best solution would be to port to using KMessageBox. Good junior job. https://invent.kde.org/plasma/kwin/-/blob/master/useractions.cpp#L194
KWin uses kdialog to run the window in a separate process; kwin itself cannot open a window.
This doesn't seem to be the case anymore, can anyone check?
Can confirm that it's fixed now.