I gave up on this bug since they aren't likely going to fix it. This should REALLY be their focus but its not likely going to happen.
Why hasn't this been fixed yet? It is a major issue and it has existed for almost two years.
They need to remove fix version 0.14.0 because the bug wasn't fixed in that version.
^ Someone should test this. ^
I wish that putting animals in small rooms fixed the problem always, but the animals still disappear in small rooms.