I cannot reproduce this. I see you installed from an Alpha ISO and thus have a development release of plasma-desktop. Please update your system. sudo apt update sudo apt full-upgrade
and report back, thanks Scarlett ** Changed in: plasma-desktop (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to plasma-desktop in Ubuntu. https://bugs.launchpad.net/bugs/1958348 Title: can't set wallpaper to solid color To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/plasma-desktop/+bug/1958348/+subscriptions -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs