Most of the time it's like this, the problem isn't a hole in the map itself, but in the prop they used. The collision overlay of this door object was badly applied, and because of that all doors that are the same model as the one each of you found will have this bug. Likewise on Naboo, there was an entrance like this in some parts of the wall in the generator room, every entrance was the same object. Also on Endor, all similar ceilings in the tunnels leading to the computer room had this same issue. It's always a problem in the objects used missing something in their collision overlay.
So if you ever find a missing collision spot in an object, expect it'll have this same issue in any other object that's equal to the one you originally found it on.