Plasma/Wayland Known Significant Issues

This page tracks the Wayland showstoppers throughout the stack. Showstoppers are major bugs, crashes, or missing features affecting the Wayland session but not the X11 session. This is part of KDE's Wayland goal.

Clipboard management

• Plasma fails to paste text copied from XWayland apps: https://bugs.kde.org/show_bug.cgi?id=424754
• 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
• Can't copy text from notifications: https://bugs.kde.org/show_bug.cgi?id=434675 (very annoying for text messages with a long code you need to enter into a website for 2-factor authentication purposes)

Login/Session management

• Session restoring does not include Wayland native windows: https://bugs.kde.org/show_bug.cgi?id=436318. 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.

KWin/compositing/window management

• When the compositor crashes, all apps crash too: https://bugreports.qt.io/browse/QTBUG-85631
• Window activation / launch feedback: https://invent.kde.org/plasma/kwin/-/issues/39
  • 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
• 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
• Various menus appear as a separate window:
  • Klipper history menu: https://bugs.kde.org/show_bug.cgi?id=436249
• Qt and XWayland apps do not respect changes to the cursor theme (but GTK apps do): https://bugs.kde.org/show_bug.cgi?id=436303

Plasma

• Plasma randomly crashes in QWaylandClientExtensionPrivate::handleRegistryGlobal() when changing settings in System Settings: https://bugs.kde.org/show_bug.cgi?id=414834
• plasma-browser-integration-host crashes in a loop when Firefox asks to be the default browser: https://bugs.kde.org/show_bug.cgi?id=435811
• 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
• 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

Drag and Drop issues

• 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