Yea I had a feeling it wasn't always like this but wasnt 100% sure.
For multiclassing, I honestly have 0 faith that Larian will implement it correctly, especially for things interacting with wildshape (like barbarians rage) so I likely won't even touch it myself.
I actually just tested the fighter/wildshape trip attack (since you can get maneuvers with the martial adept feat) and it does not work, so I guess not all class/racial features interact how they should and kind of enforces my above statement.