Trade Office/Trade window position in non-fullscreen mode

Hi,
I am experiencing a bug in the game,
which is only apparent when I'm playing in non-fullscreen mode (which happens quite often).
Most windows open center-scrren, no matter what the window size is.
The problem is with then new Trade Office (picking what to buy) window and Trade window (picking what to sell).
They always appear too low in the window and are therefore cutoff.
It's as if they have an absolute positioning instead of a relative one.
I would greatly appreciate your consideration of this bug,
Many Thanks,
Vensa