Well, I thought this was interesting so I took some screenshots. I tried using my glider to cross the area in creeping crevasse where the mastery point is but the glider failed to open. I thought I was going to fall to my death but I landed on a vine alive. The glider eventually opened once I was on the vine. I glided down into darkness where I finally died (about 2 minutes later)… had to crash the game to get out. When I logged back in the “You are defeated” appeared.
The rest of the screenshots are in this album: http://imgur.com/a/pvILU
P.S. I apologize if there’s already a thread to post these types of bugs. I did a quick search but didn’t see any. 
