Plasma/Wayland Known Significant Issues

This page tracks the Wayland showstoppers throughout the stack. This is part of KDE's Wayland goal.

Session management

User switching doesn't work: https://bugs.kde.org/show_bug.cgi?id=435389
Session restoring does not include Wayland native windows. Our sessions management recover engine is based on the X Session Management Protocol and there is apparently currently no generic concept to do it on Wayland. But on Qt it's plugin-able and GNOME has according to their wiki an own implementation for some time.

When the compositor crashes, all apps crash too: https://bugreports.qt.io/browse/QTBUG-85631
No Wayland protocol for cross-app window activation/focus, or launch feedback: https://gitlab.freedesktop.org/wayland/wayland-protocols/-/merge_requests/50
- Windows don't get brought forward when activated by another app: https://bugs.kde.org/show_bug.cgi?id=424795
- No feedback on the Task Manager when an app is launched: https://bugs.kde.org/show_bug.cgi?id=402903
- No feedback on the cursor when an app is launched: https://bugs.kde.org/show_bug.cgi?id=405624
Secondary screen doesn't come back on after disconnecting and reconnecting: https://bugs.kde.org/show_bug.cgi?id=434683
"Pin/keep open" functionality for Plasma applets does not work: https://bugs.kde.org/show_bug.cgi?id=400317
Very blurry fractional scaling for native Wayland windows due to using a downsampled 2x or 3x pixmap: https://gitlab.freedesktop.org/wayland/wayland-protocols/-/issues/34
Some menus appear in the wrong location as separate windows with titlebars:
- Context menus: https://bugs.kde.org/show_bug.cgi?id=417378
- In-titlebar app menu: https://bugs.kde.org/show_bug.cgi?id=430662
Present Windows effect for grouped Task Manager items does not work: https://bugs.kde.org/show_bug.cgi?id=397153

Context menus close immediately when the tooltip for thing that you right-clicked on closes itself: https://bugs.kde.org/show_bug.cgi?id=417939 / https://bugreports.qt.io/browse/QTBUG-83972
Text copied from a GTK app makes it into Klipper, but cannot be pasted after the GTK app quits: https://bugs.kde.org/show_bug.cgi?id=424649
Cannot unlock session after external screen turns off: https://bugs.kde.org/show_bug.cgi?id=428706
Saving and restoring activities does not work (everything else does, though).
Task Manager thumbnails sometimes don't work: https://bugs.kde.org/show_bug.cgi?id=427826
Present Windows effect doesn't activate when clicking on grouped Task Manager entries: https://bugs.kde.org/show_bug.cgi?id=404953

Plasma crashes when dragging a file over the panel: https://bugs.kde.org/show_bug.cgi?id=398440
Can't abort drag-and-drop with the Esc key while dropped file is over Plasma panel or desktop : https://bugs.kde.org/show_bug.cgi?id=405267