This has happened to me, but only during one specific run. I died twice before I realized what was happening. Some of the other posts hit it on the dot. Upon landing after using the grapple the character, for some unknown reason, turns around to face the edge. I didn't find a way to stop it from happening, so I made a conscious effort turn back around before walking. It's super lame, but not game breaking. So, yeah, just take a second or two to make sure you're facing back the correct way and it won't happen. Hope that helps!