when pressing Super + Shift and moving the mouse around, the mouse act as a pencil drawing strange red lines
these stay persistent until I kill kwin_wyalnad_wr
KDE Arch Linux up to date, wayland, AMD
You can turn it off here.
System Setting> Window Management> Desktop Effects> Mouse Mark
In that section, if you click the button to configure the Mouse Mark effect, you can see the shortcuts for clearing Mouse Mark:
- Clear last mouse mark: Super + Shift + F12
- Clear all mouse marks: Super + Shift + F11