https://bugs.kde.org/show_bug.cgi?id=419224 --- Comment #11 from Jan Grulich <jgrulich at redhat.com> --- The trick is usage of "--socket=cups". It only works with Flatpak 1.6.0 and newer. Older Flatpak releases don't support CUPS socket. -- You are receiving this mail because: You are the assignee for the bug.