Yes, importing either of the assets in particular into other projects (using the template player movement) also displays the same results.
However - the asset is a pile of boxes - if the player walks off one of the lower boxes, the instant-falling behaviour is displayed, however if the player walks off of the higher box, the player falls normal. As such I’m guessing it’s some sort of strange bug/glitch in the player step-up logic.
Here’s the asset
Note. You must walk off very slowly, ie. tapping the move button till you start falling then teleport.