Tested this today on a male Dragonborn Paladin using a Great Sword (THF).
- Trip and Improved Trip procs the additional whirlwind animation and I can see the animation plus the bludgeon damage in the combat log.
- Whirlwind (the martial feat) does NOT proc the additional whirlwind animation and there is no bludgeon damage registered on enemies in the combat log.
Has anyone else noticed this and/or is this WIA since Whirlwind got changed recently?