This only happens on single levels, not levels part of a gmap. Black shows up on the left and right of a level, on every single level.
I've looked through anything setting the GraalControl and didnt notice anything that should do this, but I'm going to continue looking.
I just wanted to post and see if anyone has had this happen and/or just might know why?
Edit: Nothing is setting the GraalControl.width per the scriptscan I did for it. It uses it's value for position on other windows, but nothing overrides the actual Graal Control itself.