I am able to reproduce this bug by doing the following:
-> Open a document in Document Viewer. -> Make it fullscreen. -> Close fullscreen.
Now the Unity dash will always appear underneath all of the windows until a reboot.
I am able to reproduce this bug by doing the following:
-> Open a document in Document Viewer.
-> Make it fullscreen.
-> Close fullscreen.
Now the Unity dash will always appear underneath all of the windows until a reboot.