I like to be crouched, and in my village, how not to do it? Well, I entered my house and closed the door when I was crouched, and to my surprise it did not close, I wanted to check it in previous versions (Specifically in 1.13.2) and I tried the same procedure, and to my amazement they close / open.
What's up with the doors? Do locks work when I'm crouched?
Doors should not open and close while you crouch as crouching prevents you from interacting with blocks in favour of using the item you are holding instead. In the case of doors it is so you can place blocks against a door.