Created attachment 157477 [details] bug happening on KDE Neon SUMMARY When disconnecting from a Moonlight stream running for long enough, moving the cursor over a Task Manager item starts dragging it until you click. STEPS TO REPRODUCE 1. Install Moonlight Game Streaming and connect to another computer running Sunshine 2. Wait a while (I got it to happen within 10 minutes one time, another time I couldn't at all) 3. Disconnect from the stream 4. Hover over a Task Manager icon 5. Try again if nothing happens (can take a long time to happen unfortunately) OBSERVED RESULT The cursor gets stuck on Task Manager icons EXPECTED RESULT The cursor does not get stuck SOFTWARE/OS VERSIONS Linux/KDE Plasma: Arch Linux, KDE Neon, probably any other distro KDE Plasma Version: 5.27.3, different on versions before 5.27 KDE Frameworks Version: 5.104.0 Qt Version: 5.15.8 ADDITIONAL INFORMATION Older versions than 5.27 have the same issue but don't actually trigger a drag This seems to only affect X11. Logging out seems to be the only way to fix this (restarting plasmashell doesn't work) I've had this happen with other apps, but it happens to me most often with Moonlight. Qt apps also behave strangely with no hover effects and focus being stuck (see attached video)
The same thing has happened to me a few times lately, I don't know what triggers it in my case. Operating System: openSUSE Tumbleweed 20230403 KDE Plasma Version: 5.27.3 KDE Frameworks Version: 5.104.0 Qt Version: 5.15.8 Kernel Version: 6.2.8-1-default (64-bit) Graphics Platform: X11
*** This bug has been marked as a duplicate of bug 466675 ***
This happened to me again, in plasmashell 5.27.8, kwin 5.27.8, X11. I don't know what triggers it, but once it's triggered, the symptoms are the same as those of the reporter. It doesn't seem to be a duplicate of Bug 466675. That one is about dragging TO a taskbar item not working. In this one, among other symptoms, moving the mouse over taskbar items without clicking behaves like dragging a taskbar item itself.
Oh crap, this isn't gone even in Plasma 6. It happens about once a month. Operating System: openSUSE Tumbleweed 20240321 KDE Plasma Version: 6.0.2 KDE Frameworks Version: 6.0.0 Qt Version: 6.6.2 Kernel Version: 6.8.1-1-default (64-bit) Graphics Platform: X11