Villager's AI issues

Well, this issue has been presented since 1.14.
Villager's AI tends to not work in some situations. It doesn't look for a different result in these cases that I've seen so far:

• Trying making their way through a flower pot (although I think it's already fixed).

• Trying making their way through a trap door.
  https://youtu.be/WRg9s2pi1Pk

• Trying walking when climbing a ladder. They cannot get off it.
  https://youtu.be/y0DuOgPcf7o
  I know these are minor problems, but I built a default-looking village and these issues break with the game experience and it also can lead Villagers to die due to Zombies or Pillagers.