Currently the selected item of the biome dropdown on f.e. ambush map looks ugly:
This is due to there are 9 elements in the list and the size of the elements is 25*9=225 and the space saved for the dropdown list is just 224 so we try to add a scrollbar, but a scrollbar for 1 pixel won't work, thus we get something ugly.
Also notice the cpp code is not trivial since it will set a scrollbar when the sizes are equal, sowhen something just fits, we try to add a scrollbar?
Fixing both: