In the 1.14 update, I started seeing in my personal village at night where a bunch of villagers where crowding on the doors trying to get in, even 1 villager can't get in the door, expect for the upper floor rooms which had no carpet on front of the door, I broke the carpet and then suddenly all the villagers came stomping in, I soon realized that the carpets were preventing villagers from entering, possibly their height. But this never usually happened in old updates. It was pretty annoying of how the villagers couldn't get in, especially in a room full of carpet designs on the floor, the only solution to the problem was deleting the carpets or replacing the carpets with wool blocks.