For the bit where I re-spawned on the main path, I don't think there was any kind of bug. It was the bit on the path back to the locked gate from the path on the left (the path without the box) where the switch is underneath the path and surrounded by spikes. I found the hole to get down there, but couldn't figure out how to get back up so I walked into the spikes and let it respawn me back where I wanted to go :P I wasn't sure if that was the "intended" solution, or if I missed something and then cheated :P