The wall jump requires you to hold up AND into the wall, and you can't wall jump if the wall is only one block high. Should I make that more clear if I update the game? Also, I know it takes a moment to detect the wall and climbing over the top is a bit weird; those are unintended.
Usually wall jumps require just to hold against the wall. So maybe that is some muscle memory. But to be fair I think this is not wall jumping, more like sliding up a wall.
