(More a documentation of that this is a thing)
In the Section with the Platforms moving around some boxes, Staying on the last set of boxes as they go into through the Doorway, I got teleported far to the right, were I was basically just before the Climb for to the Level End Cutscene. Still inside a Wall, but I was able to clip out by going up.
Only thing strange I noticed about the time this happened was that there was a 2nd Platform, but without the boxes flying on that path just ahead of the one with boxes.
I sadly wasn't recording at that time, just practicing some Levels in general.
Trying to reproduce it, generally either has me clip up on top or hit a Warp back to in front of the door.
I stood on the boxes like I did in this Image: https://1drv.ms/u/s!Auurp6qqdF68jfdL9EYfqt7UFOPkNg?e=EZ2EBY
I'd be interested in trying to reproduce this glitch for youtube documentation as the link here has expired.
Well, Luck so has it that I was able to reproduce the effect with a savefile that seems to always get this outcome.
While the setup is very different, the reason for the teleport is the same: Kit is attached to the platform as it resets.
https://drive.google.com/file/d/1Io54OJ_mIWoFU_Uu6MhhS9R8-pL7_zRt/view?usp=sharing
The original version from my memory didn't have the boxes desynced and I just stood on top of them like this: https://drive.google.com/file/d/1R1wAMYGZahtxEKvrrnI3UBWUFRquVKnJ/view?usp=sharing
From testing around a bit a few weeks ago, I assume that I at some point in the level got slightly pushed OOB in a way that I did not hit the Teleport out of it.
Edit:
Reading over my initial description again, maybe the boxes were desynced, following the platform just a few seconds delayed?
Unsure what causes these desyncs, but for this run I was collecting all treasures and stuff, so very possible that it's related to that?