Hello. I am not quite sure what's going on with the gap disappearing, but I can trigger it. Perhaps when I add the margin gap options it will be effectively resolved though as I'll be adding margins to the top and bottom of each rank. Those along with the separation between each row will be controllable for the vertical margin control and the space between each entry horizontally will also be controllable. I might end up breaking some more stuff though, hence why that's going to be saved for version 0.10 . I'll keep previous stable versions up longer as well from now on.
I released an update (0.9.3) that fixes up the drop placement so now it should be much better in that regard.