so im also not sure if this is intentional, but when you hold block before a ledge and the momentum of you walking carries you over so you're falling, you're stuck in that falling/blocking sequence (a slow one at that) and can only unblock once you reach the ground. After landing, if you press any button other than Q (or the set keybind for block), you will be stuck in that position. I've used this to get through the tentacles on the josie boss battle but it's frustrating to get out of.