Mediabay weird behaviour.

Now rolled back to I have video back (YAY!)
But now Mediabay is ghosting out. (BOOOO!)
Calling Media bay with either F5 or mousing menu brings up the track preset browser right hand pane (search results) and is blank on the window list
The only way to reveal the actual Mediabay was to shift+F5. Then the usual Media bay window would appear.
As a work around I removed F5 in key commands for “Open Media Bay” and assigned it F5 to Mediabay search.

Ditch prefs and clean install again?

Anyone else sharing this experience?

After the rollback N8.1 is working on the Prefs of N8.2, trashing them will help.