Tried binding the "Up" movement to various keys on my keyboard, still unable to climb ladders. No matter which key it is bound to, it simply toggles crouching on/off when pressed.

Also, toggling run/walk is very glitchy and is only successful sometimes, despite binding it to other keys. Example: I'm walking and want to run, so I press [Left-Shift x 2] so that I can run, but I continue walking. I try pressing it once, twice, several times, etc. still walking.