Testing the Lawful Evil familiar, Imp. Two things:
First, it can turn into various bears. That seems weird. Expected: No bears.
Second, the movement rate on some of the polymorphs are highly increased. The jelly and the Flind move around at at least twice the speed of what they should. Expected: Move more slowly. (Edit: actually all of them)
Then there is also the issue of the find familiar spell being completely broken at first level, but that isn't a bug but a balancing issue.
Edit: i did a search and couldn't find anything on this, but if this was already reported, feel free to delete the thread.
Edit2: Maybe the imp is simply hasted when polymorphed? It seems to have a lot of attacks...my Imp just basicly single handidly defeated Greywold, pretty good for a little jokester.