Was 11,16 changed at any point? I thought I remembered it being possible to get the star entering with just 2 steves, and only needing 3 to get the exit, but that doesn't seem to be the case now (unless I just can't figure out the alternate solution without getting a third Steve to start with, which I do know how to do, but I want to see if the other way is possible, too). I also see another comment from a few years ago mentioning the star itself is on the spikes, which doesn't seem to be the case in the current version. (If it is impossible when entering with just 2 now, then it makes the teleporter that lets you start with 2 a bit of a pointless checkpoint.) Also makes it feel a bit less special since there's effectivelly one fewer puzzle to solve, and it makes it less consistent with how other rooms work.
Also, I found a super minor bug, probably not worth taking the time to fix: Room 10,5 doesn't track what music should be playing, it just plays the music from the previous room. 99% of the time that's fine since the previous room is gonna be 10,6. But if you warp out and then undo, the music of whatever room you warped from will be playing until you go back to 10,6.