Sorry for this early message. The issue reoccured this morning. The I did a restart of the phone. After the restart of the phone everything works ok again.
So there seems to be an effect how long the phone is running after a restart. OSK flickering starts not directly after the restart! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1590765 Title: OSK flickers and buttons are sometimes invisble To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1590765/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs