Comment # 5 on bug 1001473 from Dominique Leuenberger

(In reply to Bj�rn Lie from comment #4)
> It could also be as simple as 2 diff resolutions tripping it over.

I got two different resolution (1680�1050 & 1366�768) - recording works.

so hidpi (or simply the 'area to be recorder, meaning the number of pixels'
might is more likely' I have seen a  user with 3 screens reporting it -
removing one them made the problem go away