SUMMARY Cannot select initial picture for a user. STEPS TO REPRODUCE 1. Open Users KCM in Systemsettings 2. Click on a user 3. Make sure the user has a name, e.g. "abc" 4. Click on the avatar 5. Click on the icon "a" (which is the first letter in "abc") 6. Click on one of the colored icons "a" OBSERVED RESULT Nothing visibly happens. On the command line though: file:///usr/share/kpackage/kcms/kcm_users/contents/ui/UserDetailsPage.qml:425:29: QML Rectangle: grabToImage: item's window is not visible EXPECTED RESULT The avatar should change to the selected colored initial-based icon. SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: 5.18.5 KDE Frameworks Version: 5.73.0 Qt Version: 5.14.2 ADDITIONAL INFORMATION kcm users built from Git master.
This is what happens when you run the users KCM with a Qt version below that of Plasma's minimum (5.15). Update your Qt to at least Plasma's minimum and this should work.
Just to clarify: KDE Plasma Version: 5.18.5 Qt 5.14 is supported there. That also means alex isn't using the redesigned users kcm.
Alexander said he was using the users KCM from git master; which would be in Plasma 5.21; and the given error is from a source file in the new KCM.
Cannot reproduce on Plasma 5.22.5. Thanks!