While I still have it in mind, would it be possible to make the res display responsive with window scaling ? Feels a bit weird when you have a lot of elements and have to scroll when you could just scale it to display everything. 
IE :
EDIT : also, is there a reason why the lightmap preview doesn’t update without baking lights again ? I mean it does update the override resolution values, but does not update the preview colors/grid when in lightmap density mode. You have to bake again without even knowing if your new values are good or not (unless you change em manually once more, but it kinda defeats the purpose of AutoLightmapUEr).
EDIT 2 : Reloading the map seems to refresh the lightmap density view…Sometimes ? Kind of a temporary fix I guess ?
Anyways, food for thoughts