Just found a new softlock while running Any% Easy. I found it on the mission "Old Memories." When you climb the watchtower with the zipline, if you attempt to get onto the zipline while standing at the top of the ladder, you can make Gabe climb down the ladder while the animation of jumping onto the zipline happens. If you do this, you will be stuck at the top of the ladder, softlocked in place. You can move the camera, equip and reload weapons, or turn on/off the goggles. But you can't move up or down the ladder. I'm guessing that interrupting the animation of jumping onto the zipline with the animation of climbing down the ladder confuses the game into believing that you shouldn't be able to move since you're supposed to be on the zipline. It's an odd discovery. Finding it completely killed a good pace run I was on just a moment ago.
Omg I meant to make a post about that, as well. I've noticed that glitch too. Usually I get it while reloading right before a ladder.
So if I'm right, if you reload while running to a "corner" at the top of a ladder, you can just fall down it instead of taking the ladder as normal. It's really hard to replicate. I've had it happen prob 10 times or so. It normally only happens if I'm running sideways or backwards.