I found this too, got a low 16 with it, but this bug doesn't actually let you save time over just jumping the gap interestingly(as far as I know), since you can't carry momentum.
Moss Finder
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A member registered Nov 15, 2023
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Not really sure if I should mention this or where, but you can go into the walls by clipping into the corners, if you want to replicate this pretty much just jump at the crack in the far left wall until you clip through(I tried to get a video of it, but for some reason obs records the game specifically at like 1 fps)