WORKAROUND IDENTIFIED. PROBABLE SOURCE OF BUG IDENTIFIED.
Using Unity Tweak, I changed the Theme from "High Contrast" to "Ambience". Missing menus are now visible. Change back to Ambience and bug recurs. The cause of this bug seems to be related to the "High Contrast" Theme. This workaround also applies to the related bug #1440274 Thunderbird Menus Not Displaying In Top Menu Bar of Windows -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1439992 Title: GIMP - Menus not displaying in Title Bar of GIMP Windows in 15.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gimp/+bug/1439992/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
