I have noticed a bug popping up with my power tray.
I play with the large space power tray at level 4. The three weapon buttons instead of being displayed on against the tope left side of the tray are being displayed further down, pushing the fire all weapons button off the screen.
The buttons did pop back into place when I was dead, which unfortunately was of no use to me as they went back to the wrong placement when I respawned.