I have a monitor of 1080 pixel height and v3.3.1.0 barely fits on my desktop. Check picture. What if somebody has even smaller screen resolution? I tried searching BRU's menu for a remedy, could not find any. Btw, does Display Options > Font even have any real effect on font size? I am unable to notice anything.
To fix BRU's height issue I suggest to separate the tree and list top half from bottom half with a draggable separator, and put the bottom half inside a panel that is scrollable. Then users can resize the list part as is needed and bottom half won't consume most of screen.
Or redesign the whole UI to be compact.