Hearthlings willl drop what they are holding on ladders and leave it there until the ladder is taken down. which then the item drops to the ground.
When mining, if you try and go up a floor the hearthlings will float blocks with their friends still standing on them and then they are stuck in mid air. Kinda mean when it happens because then the one that is stuck will have to wait for a ladder.
Hearthlings gather together around fire pit for long periods of time. Now this isn’t just when the fire pit is lit but during the day too. they will just stand next to the fire pit (and not sit down). They will stand there for so long that they get hungry and not eat. (actually they wont do anything) even put them in a party and forced away from the fire pit. only for them to go right back to it like moths.