https://bugs.kde.org/show_bug.cgi?id=375686
Bug ID: 375686 Summary: Black square in top-left corner Product: plasmashell Version: 5.8.4 Platform: Other OS: Linux Status: UNCONFIRMED Severity: normal Priority: NOR Component: XembedSNIProxy Assignee: plasma-b...@kde.org Reporter: p...@ralfj.de Target Milestone: 1.0 Created attachment 103690 --> https://bugs.kde.org/attachment.cgi?id=103690&action=edit Screenshot demonstrating the issue When compositing is disabled, I can sometimes see a black square in the top-left corner. I believe this is related to xembed-sni-proxy because clicking the black square behaves like clicking on one of the tray icons that are managed by xembed-sni-proxy -- both for left-click and right-click. The square is not visible when compositing is enabled, but e.g. going to full-screen in mpv disabled compositing and then I have this square on top of the video. Furthermore, *clicking* the area covered by the invisible square still behaves the same when compositing is enabled (naturally, as compositing does not affect input handling). This is not 100% reproducible, I just restarted the application tied to the square (Gajim) and the square did not come back. I will attach a screenshot demonstrating the issue. -- You are receiving this mail because: You are watching all bug changes.