Steps to reproduce: 0. Have a panel with an attached notification window (e.g., the system tray, "Status and Notifications"). 1. Switch to desktop 1. 2. Activate that panel-window (e.g., the status and notification section). It should be visible as expected. 3. Change desktop using kwin's "Switch to Desktop 2" keybinding (default is Ctrl-F2). The panel-window should disappear. 4. Change back to desktop 1. Try opening any panel-window again. It won't be visible (this is the bug). If you use the "toggle present windows (current desktop)" (default Ctrl-F9), you'll see a blank window, which represents the panel-window that isn't visible. Clicking on it raises it, and brings plasmashell back into a reasonable state.
Sorry, to reproduce this, you need, in .config/kwinrc: [Compositing] HiddenPreviews=4 Also, you might need to somewhat rapidly swap around opening the status and notifications window and changing to other desktops. I'm not even sure why I had that setting in kwinrc to begin with, so I'm going to lower this priority a lot.
Cannot reproduce with that line in my kwinrc file. A lot has changed since this bug was filed. Is it still reproducible for you in Plasma 5.25 (the latest LTS version) or 5.25 (the latest version, period)?
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This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!