Villagers get stuck in diagonal walls

Diagonal walls as in the blocks used to make the wall are only touching each other by their corners. The plains large library and fletcher house have these corners and the librarians and fletcher tend to stay in the corner for a long time as if they could walk into their house that way. I've tried to fix this by making a 1.5 block high area where the corner is on my library, but they still try to jump there to enter the library.