My "homes" are mostly castle-like (wall around some buildings). Within this, I often place some fences (double height) to keep animals (mostly chicken) from running away.

Since the bedrock "upgrade", I repeatedly find wrong animals added to my fenced-in ones when I quit and reload or when I'm away for some time.

I don't know if this matters, but often the farms are not four sides of fence, but 2-3 sides of fences and the rest is walls.