I enjoyed this a lot.
I seem to remember finding some trivial stuff, but I lost my notes. If you're interested, I can play through again, because I think I'd have fun.
The main one was that the tutorial fired off a one-off "careful, this is a timed puzzle" when there didn't seem to be a timed puzzle (the trash bag.) Thus when I ran into an actual timed puzzle, it didn't fire.
The only thing I would add is an in-game note that the map runs east-west-ish, if the player wants to make a map with pen(cil) and paper. I ran out of space at first drawing mine up.