Plasma/Wayland Known Significant Issues

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

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 had their own implementation for some time.
• Windows that *are* session-restored go on the wrong virtual desktops: https://bugs.kde.org/show_bug.cgi?id=421870

KWin/compositing/window management

• When the compositor crashes or restarts, all apps are killed
• Windows that were closed when maximized will open in the maximized position, but not the maximized state: https://bugs.kde.org/show_bug.cgi?id=437089
• Hidpi with fractionnal scaling blurs fonts and images https://bugs.kde.org/show_bug.cgi?id=446674

Plasma

• Saving and restoring activities does not work
• Monitor connector names are different across X11 and Wayland, so logging into a Wayland session from X11 breaks multimonitor layout and Plasma configs: https://bugs.kde.org/show_bug.cgi?id=385135
• XEmbedSNIProxy window eats input in top-left pixel of the screen: https://bugs.kde.org/show_bug.cgi?id=433079

System Settings

• Font Management KCM doesn't work/isn't visible: https://bugs.kde.org/show_bug.cgi?id=439375
• Gamma KCM doesn't work/isn't visible
• Pointer acceleration setting doesn't work: https://bugs.kde.org/show_bug.cgi?id=427771
• Graphic tablet KCM is very barebones compared to X11 version

Drag and Drop issues

• Dragging item from the desktop makes it temporarily disappear: https://bugs.kde.org/show_bug.cgi?id=443470
• Apps gets stuck after dragging things out of them: https://bugs.kde.org/show_bug.cgi?id=446891
• 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

Qt/Wayland/other upstream

• Very blurry fractional scaling for native Wayland windows due to using a downsampled 2x or 3x pixmap: https://bugs.kde.org/show_bug.cgi?id=446674 & https://gitlab.freedesktop.org/wayland/wayland-protocols/-/issues/34
• No color management: https://bugs.kde.org/show_bug.cgi?id=439135 / https://gitlab.freedesktop.org/wayland/wayland-protocols/-/merge_requests/14
• KDE app windows don't get brought forward when activated by another KDE app: https://codereview.qt-project.org/c/qt/qtwayland/+/321246 (in review: ; support will come sometime for Qt 6)
• KDE app windows activated by Electron apps don't get brought forward due to lack of support for the Activation protocol in the toolkit: https://github.com/electron/electron/issues/30912
• Picture-in-Picture windows from web browsers do not stay on top: https://gitlab.freedesktop.org/wayland/wayland-protocols/-/issues/44
• When a notification times out, it closes any context menus that are open and then blocks the next two right-clicks: https://codereview.qt-project.org/c/qt/qtwayland/+/347783