It's also possible that the OP is running in a very low resolution mode,
say 800x600 or the like. Pan works best with at least 1024x768
resolution, as many of its dialogs, plus button layout and the like on the
main window, assume that. The button bar on 0.111 pan looks to be roughly
860 px long, here, so at 800 px wide, 800x600 would simply not be wide
enough. I recall similar issues with old-pan, 0.14.x, and 800x600
resolution. 1024x768 was the assumed minimum screen size on it as well,
tho 960x720 or similar might work.