My grapple hook kept getting stuck and not being able to latch onto anything, the hole section did not load until I was in it and I couldn't move after grappling one the beams at the roof and was stuck up there.
I think I fixed the grapple bug you found. It happened in super weird places, but your description helped a lot. I pushed a new build with that fix and some other changes if you want to check it out :)
I couldn't find any more bugs in the game. The removal of retracting to pull yourself was good, because you could skip lots of things with it. All in all, great game engine!