I've noticed two things related to window weirdness, possible the same thing:
- Modifying circuit item's logical RHS text field. Sometimes when typing in a value, it'll reset and I'll lose focus on the text field; and
- When I was cruising in a train, I had an inventory window open (I think, not sure if it was the trains or mine) and moved it out of the center of the screen. It would then snap back into the dead-center of the screen. I would move it again... and again it would snap back. The delta-t between recenter varied, but usually on the order of seconds.