https://bugs.kde.org/show_bug.cgi?id=452770
--- Comment #6 from S. Christian Collins <s_chriscoll...@hotmail.com> --- I've tested this more thoroughly tonight and discovered I can repro the bug using the latest neon and Manjaro liveCD images. However, I am now less convinced this is explicitly a kwin issue and more likely a timing issue caused perhaps by the Mozilla apps creating a window and then being late with its contents. The bug only appears when the timing is just right, and that timing can be impacted by the window decoration chosen, the host system's specs, and whether or not one's cat is in heat. Further observations from my testing include: * The snap version of Firefox is not affected by this bug * The Gnome window manager does not exhibit the bug. * The XFCE window manager *does* exhibit the bug. * Kwin exhibits the bug when using the Breeze window decoration, but not Plastik. * I cannot repro the bug in VirtualBox, only on real hardware. * It can take several attempts to get the bug to appear, particularly in Thunderbird. I can repro the bug back as early as the Kubuntu 21.10 LiveCD (Plasma 5.22.5, Frameworks 5.86.0, Qt 5.15.2, Firefox 93.0.0), but not Kubuntu 21.04 (Plasma 5.21.4, Frameworks 5.80.0, Qt 5.15.2, Firefox 87.0), though I acknowledge not much can be inferred from this. -- You are receiving this mail because: You are watching all bug changes.
