I've a few of the tamed darlings in the main area of my base. I've had to fence everything off to stop them from doing dumb things.

Wandering into the open sea for no reason .....yup.

Walking into the hearth and literally standing there while cooking....yup.

After being unable to walk into the fire after I made a fireguard, do they walk into the smoke a level above.....yup.

And as soon as I open a door to go somewhere, they try to go through (not even set to follow).

Little gits.