They don't seem to recognize terrain irregularities and tried to generate farms over a mountain or generate farms incorrectly (without composter and farm villager) as seem in screenshot 1 at least in this biome but terrain irregularity persist repeatly in all biomes. Some paths are blocked and the villagers don't have access to the generated table in the house (screenshot 5 I needed to put dirt to make table acessible). I also had problems when their A.I don't recognize beds or tables in a medium distance or in a house (no screenshot available). Everything was holes or paths that go over something and don't meet. Also i saw some previous seed screenshots and villages were much more beautiful, some had houses that go over water and there were no holes but suddenly in my random worlds i had these problems.