It only happens when i D/C , after i relog it's usually shoved almost to the bottom of the screen. ( a few cm off from it's original position ) same thing happened to my chat box in 2.0.
After a couple of d/cs in the first few months, my chat box got pushed so far to the right i can't see half of it as it is stuck there and is cut off on my tv's screen.
It's been there ever since.
(・ω・)ノ