Yeah, it is the coward chickens that make it look rather weird, I’ve been able to experience the Bubble Bath level with other chickens and they seem to behave normal. But even so… I’m pretty sure I’ve experienced coward chickens in bubble bath before and they didn’t behave like that, but who knows.
EDIT: I’ve found in older topics ( Idea about how to Fix one CURRENT KNOWN BUG - #6 by InterAction_studios ) that this is indeed a bug, even though back then it was affecting only ninja chicks ( seems to have been solved back in version 18 Early Access version 18 ) and since coward chickens were introduced in version 29 ( Early Access version 29 ) they seems to suffer from the exact same issue.