Dang.. I tried it again, this time with Witch, Simple, No Sound, Blobs, and still can't progress. Got the two keys in the bottom row and the one at the top before the end.
I’ve been trying to replicate it. I got it to occur a few times. from what I can tell it sometimes works and sometimes just won’t. I’m not sure of the cause yet but I might have to partially rebuild the platformers. I think it’s not clearing the variables correctly.