I'm upgrading my entire village. Made a new Boar Pen and horded them there. They were all tame and happy, but got frightened as soon as they reached the new area.

Are boars frightened by Portals?
Just in case, i built walls w. roofs over any section where they could see the Portals.

Are boars frightened of fire even if on the other side of a wall?
I have a hall close by w. a Fire Pit inside.
But again, there is a wall between the Pen and the Fire Pit.

Can't figure out what the issue is. You cannot see any fire (or portals) from anywhere in the new pen. But they still go berserk as soon as they reach the new pen.