Comment # 3 on bug 1001473 from Bj�rn Lie

(In reply to Thomas Bechtold from comment #1)
> The problem seems to be adual monitor setup (one is 2560x1440 (primary) and
> the laptop is 1600x900). With only one minitor, it works.

Aka one HiDPI and one not.

I would guess that is a clue since it works for Richard on dual monitor