the concept of interacting with stuff between worlds to advance is really interesting and i'd love to see how its implemented. i'm not too familiar with webGL to offer any solutions so i wish you the best of luck :Oc !
It looks like it's webGL bug connected with platform effectors. I've just replaced collider under character with raycast to check for ground. I hope I won't encounter more webGL bugs cause it's easier for player when there's version to play in browser.
