Since the Height of the Adult Villagers is they can't walk through a space of 2 Block High when there's a Carpet, in some Buildings the Villagers can't access their respective Work Station because there's one or more Carpets that blocks it's pathfiding.
Besides highlight the issues I will also provide solutions to these problems.
Solution: Replace the Carpet and the Acacia Planks underneath with Wool Blocks.
- Mason's House #1
Solution: Replace the Carpet and the Spruce Planks underneath with Wool Blocks.
Solution: Remove the Carpet.