Looks like this is similar to bug 1625846. Mir lacks a client API allowing clients to flag that certain surfaces (of the app's choice, not defined by the surface type) should not receive focus and thus should never take focus away from the app window.
** Also affects: mir Importance: Undecided Status: New ** Also affects: miral Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1662733 Title: Window titlebar and shadow flickers when scrubbing through menus (or when a tooltip appears) To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1662733/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs