[Usability] visibility in combo boxes (again)

[Jacob Beauregard <jake13jake comcast net>]

Hey, using The GIMP 2.2.13 (pretty much the only GTK program I've used the 
past two weeks) save dialog with gtk-qt-engine 0.71 is exhibiting the combo 
boxes to show the scrolling arrows with blank space rather than showing every 
option when it does not fit on the screen.

Is GTK on my system outdated again? or does anyone know if it was reverted? or 
is it gtk-qt-engine? I certainly believe that full visibility is the more 
usable option.