While I was building a test trading hall build, I started to place villagers in their "homes" and after the first few, the remaining villagers began choosing either Farmer, Shepard, or Butcher despite there being no block available for that job. I decided to let them wander to path-find to where they thought the block was, but after wandering between 20 and 40 blocks, they just stood still, offering no indication of being unable to path-find.

I thought I found a fix for this by just exiting the game and reloading the world, but this issue popped up again after placing a few more villagers. I'm not sure if this is happening because of repeated breaking and replacing of profession blocks to rotate trades, but I have never had it happen to a villager that started unemployed and then linked to the profession after I placed the block. Only newly spawned villagers appear to be affected and cannot be unlinked from the imaginary profession