Created attachment 159152 [details] little animation SUMMARY On reproducing the crash for bug 469908 several times, I found my non-maximized windows are moving. It seems, the window decorations are not properly accounted for. So for each crash, the window jumps up / left by the thickness of the title-bar / its dragable border. STEPS TO REPRODUCE 1. Setup a screen with some unmaximized windows/dialogs (e.g. Konsole, KMahjongg, KNotes, ...) 2. take first screenshot 3. kill -s 11 $(pidof kwin_x11) 4. take second screenshot OBSERVED RESULT The screenshots show some movement shifting some windows / dialogs potentially off screen EXPECTED RESULT Don't move. SOFTWARE/OS VERSIONS Operating System: Kubuntu 23.04 KDE Plasma Version: 5.27.4 KDE Frameworks Version: 5.104.0 Qt Version: 5.15.8 Kernel Version: 6.2.0-20-generic (64-bit) Graphics Platform: X11 Processors: 8 × Intel® Core™ i7-4700MQ CPU @ 2.40GHz Memory: 15.5 GiB of RAM Graphics Processor: Mesa Intel® HD Graphics 4600 Manufacturer: Micro-Star International Co., Ltd. Product Name: GE70 2OC\2OD\2OE System Version: REV:1.0 ADDITIONAL INFORMATION - KNotes seems immune, as it doesn't have decorations. - Also Signal seems protected, as I have a window-rule to set it's position on initialization. - And finally maximized windows likely ignore positioning and just set their state as maximized requesting all the screen.