I found it comes from the Unity integration. When you put the window in maximized mode. If you close and open it again, you will see a hole instead of the controls.
-- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to shotwell in Ubuntu. https://bugs.launchpad.net/bugs/1245575 Title: sometimes no controls in viewer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shotwell/+bug/1245575/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
