SUMMARY When you're under Wayland session and got more than 1 open instance of any application, go to the icon at the icon-only task manager, left click on it, it shows for about 1 second, then disappear almost instantly, not allowing either close it with the mouse cursor, nor selecting and changing between the opened instances. STEPS TO REPRODUCE 1. Login to the Wayland session. 2. Open 2 windows of Firefox (for example). 3. Move the cursor to the icon, click on it. OBSERVED RESULT The preview of the two windows/instances, is showed for about half second or a second, then disappears with no option to be interacted with. EXPECTED RESULT The previews should be accessible and interactive with, when you click on them, they should be there until you move the cursor out of the space or you click on other part. SOFTWARE/OS VERSIONS Linux/KDE Plasma: 5.6.15 (available in About System) KDE Plasma Version: 5.19 KDE Frameworks Version: 5.70 Qt Version: 5.15 ADDITIONAL INFORMATION This bug has been present since the update to Plasma 5.18 LTS. Sorry for the delay in the report :(.
has been fixed in master version