Has anyone else encountered this? I'm going through mission 3 (Forest compound). I'm trying to enter this building through the back window. There's even a wooden plank for you to climb on to get through the window. I've watch videos of people doing this without an issue and I've tried everything so I don't know what's wrong. I've tried crouching, not crouching, moving around, looking up, enter backwards, nothing works. Here's a video demonstrating the problem.

https://www.youtube.com/watch?v=gFoeC7zC2G4

Nevermind, I did it. You climb, then crouch-jump. It doesn't work instantly but pressing space a few times does the trick.