Comment 6 for bug 845719

It's a cumulative thing that seems to take a day of regular use to arise, but I have a horrible intuition that it may be related to sloppy mouse focus (actually "mouse" mouse focus per gnome-tweak-tool) and switching desktops with keybindings. The behavior seems to start after I've flipped from one workspace to another with keybindings, perhaps moving onto a maximized window.

I've also noticed that selected desktop nautilus icons remain grey unless I move to a workspace that has no other windows on it.

I'll try logging out and reproducing soon.