This is the Mac version, and from the Infinity Hype Update.
Itīs part of the Comic Sans and Papyrus Challenge
I don't recall that room either, but I assumed those two challenge didn't have any secret rooms in them. I gave up on both, too much thinking and trial required :oops: I think I might've spotted the room in the editor once, but I can't remember where it was.
Congratulations on your success then!