I experience the same problem after upgrading from kubuntu 14.04 LTS to 16.04 LTS.
KDE Plasma Version 5.5.5 Qt Version 5.5.1 Kernel Version 4.4.0-31-generic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1451564 Title: Probable packaging problem: Single-click not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kde4libs/+bug/1451564/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
