[1.0.1968] Animals leaving designated area due to unforbiding door

[Illusion Distort]

Seems animals confined to stay inside (that's what this area is definded as) will sometimes wander outside when the door is unforbidden

What the circumstances were:
My Yorkshire terrier was confined to the inside of my main building. (picture 1-3).

What happened:
The terrier started pathing to a tile right outside the door with the tag "wandering" when the door was unforbidden

What you expected to happen:
Animals should not  be able to leave the area, unless forced or during mentalbreaks.

Steps we can follow to make the bug appear: (only happens sometimes it seems, perhaps if the pawn is retasked the same tick as the unforbid?)
In the "attached" pictures you can see the setup, an animal confined to an indoors area with doors on the border. I also included a savefile.

Altough none of the images was captured while the pawn was outside the area, you can see the door closing behind the terrier as it returns.

https://www.dropbox.com/sh/vf8y5jvrq2xr6ox/AACXVlNckKOODrEXB7nCR9Lka?dl=1