Anywhere trap doors are used (for decorative purposes or functional) villagers now get stuck. Before the last update villagers were able to walk past these with no issues.
I’ve played around with this a little more and it seems to be any trap doors one block up (so at the villagers head level) that they are getting stuck on. The trap doors at ground level are not impeding them. I don’t know what was changed, if it was pathing AI or the villagers hit box. But something with the update 1.18.30 has caused this issue.