SUMMARY *** NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols. See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports *** STEPS TO REPRODUCE 1. Have cursor size set to 28 2. Set global scale to 200 % in Display settings in X11 3. Relogin or Reboot 4. Observe that cursor size gets tiny (unscaled). OBSERVED RESULT Cursor size shrinks after logging in (sddm does scale the cursor correctly). EXPECTED RESULT Cursor size should be scaled accordingly when adjusting Global scale. SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: Gentoo Linux (available in About System) KDE Plasma Version: 5.24.0 KDE Frameworks Version: 5.90.0 Qt Version: 5.15.2 ADDITIONAL INFORMATION It's been like this for a while, but I seem to remember that before you had a setting called "Resolution dependent" under Size in Cursors system settings. Where has that gone? As mentioned, the cursor is properly scaled when in sddm (with hidpi=true), but you can see it shrinks down during login.
This bug is inactionable from kwin on x11.