FYI I just found a new glitch, right after submitting... anyway, it shouldn't be too hard to implement, no need to delay or anything.
The glitch in particular is done by jumping into a room transition trigger, and fall into a pit in the next room without touching the ground, this makes the game put you in the next room with the coordinates of the previous room, which could be used to warp to the other side of a room, if there's a pit near enough to the door. Since the fall animation is somewhat long there aren't that many places where this should be useful anyway, since walking would be faster if theres no specific obstacles in the way.
Here it is:
https://tasvideos.org/UserFiles/Info/638412076690829915
Found one room where its useful, since it skips waiting in a moving platform, on level 4, had to change around the movement on some rooms later on because of different enemies patterns, which lost a few frames over the previous movement.