SUMMARY Using the breeze sddm theme results in many QML type errors of the form: "TypeError: Cannot read property 'smallSpacing' of null". STEPS TO REPRODUCE 1. Run sddm-greeter --test-mode --theme /usr/share/sddm/themes/breeze 2. Close the sddm-greeter window OBSERVED RESULT Output will contain many "TypeError: Cannot read property 'smallSpacing' of null" and similar errors." EXPECTED RESULT No errors SOFTWARE/OS VERSIONS KDE Plasma Version: 5.18.5 KDE Frameworks Version: 5.70.0 Qt Version: 5.15.0 sddm Version: 0.18.1 ADDITIONAL INFORMATION When using the sddm theme, for some reason the QML "units" id is "null", which results in all the QML type errors. I've looked around the plasma source code to figure out why this is the case but I'm not familiar enough with QML to properly figure out why "units" is "null" when using the sddm theme.
This was fixed a while ago.
*** Bug 430857 has been marked as a duplicate of this bug. ***