When you vault over an object and crouch at the same time you get stuck in "crouch mode" and have to manually tap to get out of it.
Its most commen when crouch jumping around.
i have mine Crouch/slide set to hold.
And here is another parkour spot for ya:
And a bug in the Stats meny....i think, i mean it cant be right
https://ibb.co/q16jCS6