Here are a few bugs that i've found while playing with the new skill tree:

As pink sham, when you turn into a cat, your feathers turn blue. (replaces the color)

If you give someone a leaf, and make them small, the leaf doesn't work, but is still there.

Using the transform power when you're tiny will cause some silly effects. Example: Instead of havng just the head, you will have your whole mouse.

Sometimes, when using emotes when tiny, your mouse gets distorted upward. (looks silly)

Theres a lot more and i'll update along the way, but these are the ones i've found. ^^