(ik I'm posting a lot) Crew members are acting strangely on my custom ship. FU, vanilla changes, or both?

I'm building a very big custom ship, and so far the crew quarters are furnished with sleeping quarters, an eating area, a bathroom, and a small arcade for each section. The teleporter is a ways away from and above the crew quarters, and is accessible to them via platforms.

They sometimes walk out of the crew area and go under where BYOS placed the teleporter (I have since changed the spawn point to its new location), or sometimes under where it is now, and will walk back and forth on one block, as if they're trying to reach it by taking the most "direct" route. They never stop unless asked to follow me. I frequently have to break them out of their odd loop and lead them back to their quarters. This was before 1.3, too.

Another oddity, and FU may be responsible for this, is that they treat their chairs like consoles. I've seen them go up to them and do the "pressing buttons" animation. They never sit in them. The chairs are the padded metal ones that go with the "Basic Metal" set found in arctic outposts.

I've also never seen them use their beds since building this ship.