Comment 5 for bug 1403140

Wow, nice catch. This makes Unity 7 work 100 times better for me now, and it solves some additional bugs in addition to the ones mentioned above:

- Nautilus copy progress window doesn't hide or get lost altogether
- Apps that were hidden into the system tray (Clementine, SpiderOak, Pidgin, etc.) used to restore to the dock, but not actually appear if another app was maximized. This required restoring and then clicking on the dock icon to actually make it visible. With focus prevention set to off it works correctly.