When attempting to use negative values for window position under 'Configure Special Window Settings' cause the window to turn invisible and it's position is moved nowhere near it is suppose to be. I can tell because I use this for my virtual machine and the position where my mouse is captured makes no sense what-so-ever. STEPS TO REPRODUCE 1. Select a window 2. Alt+F3 3. More Actions>Configure Special Window Settings 4. Add Property(bottm left + button) 5. Position 6. Use the Force option and use a negative value for x or y. 7. Apply and the window will disapear from view. OBSERVED RESULT Window disapears and moves in completely unexpected way. EXPECTED RESULT For it to move a negative amount of pixels off my screen. SOFTWARE/OS VERSIONS Linux/KDE Plasma: NixOS (available in About System) KDE Plasma Version: 5.27.0 KDE Frameworks Version: 5.103.0 Qt Version: 5.15.8
Using the 'Apply Initially' option(for position) seems to sometimes work for the positive value but the negative value isn't recognized.
What's the usecase for putting windows offscreen?
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/3633
(In reply to Vlad Zahorodnii from comment #2) > What's the usecase for putting windows offscreen? I like to have a 16:9 section of my Ultrawide sectioned off for my virtual machine. Using VMM there are headers and a toolbar at the top of the window. So in order to have a full screen like experiance I need to move it partially off screen(so the top bars are not shown anymore) and prefer to do that once I open my VM. Currently now I have to manually drag it every time I open it. I mainly do this for my Astrology work/readings as none of my software runs on Linux. https://imgur.com/a/sC0CuTS
(In reply to Bug Janitor Service from comment #3) > A possibly relevant merge request was started @ > https://invent.kde.org/plasma/kwin/-/merge_requests/3633 I don't believe so. This is happening under x11(I haven't tried under Wayland). This is supposed to be a wayland fix.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/9156
Git commit 2f8a86034baeb9c238fbf20f772b23cac659e073 by Xaver Hugl. Committed on 01/05/2026 at 10:43. Pushed by zamundaaa into branch 'master'. rules: make checkGeometrySafe actually safe If the window rule's position was outside of every screen, it before returned a rectangle that's at INT_MIN, causing the window to disappear and even triggering asserts when that geometry was used in some calculations. M +7 -6 src/rules.cpp M +1 -2 src/rules.h M +3 -3 src/x11window.cpp M +7 -5 src/xdgshellwindow.cpp M +1 -1 src/xdgshellwindow.h https://invent.kde.org/plasma/kwin/-/commit/2f8a86034baeb9c238fbf20f772b23cac659e073
Git commit f0c8aabceed528a56ece0b579e32f50a19d379cb by Xaver Hugl. Committed on 01/05/2026 at 22:37. Pushed by zamundaaa into branch 'Plasma/6.6'. rules: make checkGeometrySafe actually safe If the window rule's position was outside of every screen, it before returned a rectangle that's at INT_MIN, causing the window to disappear and even triggering asserts when that geometry was used in some calculations. (cherry picked from commit 2f8a86034baeb9c238fbf20f772b23cac659e073) Co-authored-by: Xaver Hugl <xaver.hugl@kde.org> M +7 -6 src/rules.cpp M +1 -2 src/rules.h M +3 -3 src/x11window.cpp M +7 -5 src/xdgshellwindow.cpp M +1 -1 src/xdgshellwindow.h https://invent.kde.org/plasma/kwin/-/commit/f0c8aabceed528a56ece0b579e32f50a19d379cb