Thanks for digging into it! There IS music during play... that I turned way, way down while testing and never turned back up. It's whispering the beats I guess. Your bug is actually a result of turning off a really mean feature, that if you press and hold spacebar before landing on a ledge (while still jumping) the ledge wouldn't activate and you would fall and die. I turned that off but if you still press early... jumping won't initiate until you release. Great catches.