Mobs Floating Away Under Water

[Esildor]

Is there anything that can be done about this?

I've got a boat underwater and put mobs on/around it, and, some of them seemingly float away.

I've tried turning off runspeed, does nothing. Was thinking about establishing an X/Y/Z upon spawn and having them move back to that periodically but that seems kind of bleh...

Any fix?

[Esildor]

Put them on small pathgrids around their spawns, should do the trick