No ability to save and restore positions of native Wayland windows
Real-fake-session-restored apps don't remember which virtual desktop their windows were on
No full-screen aspect ratio correction
"Spare Layouts" feature not implemented
"Per-application Keyboard Layout" does not work
No way to change the gamma or manually adjust the colors without generating or finding an appropriate ICC profile
Can't switch between multiple touch strip modes
No headless RDP
Opening files using command-line binaries in Konsole doesn't raise existing windows
Global Menu is not supported for non-Qt apps
Some apps' non-maximizable windows are broken with placement policy set as maximized
[1] https://community.kde.org/Plasma/Wayland_Known_Significant_I...