On Build 1284, local animator parameters seem to be represented as Floats in animators, and in the avatar debug menu - see first attached image. Bool parameters that are unsynced (only used in an Animator, not listed in synced parameters) are correctly shown (and used) as Bool on Live (1282), but are represented (and used) as Float on Beta (1284).
This regression breaks existing AV3 systems that rely on local bools (or ints) to transition between states, which impacts a fair number of avatars and prefabs.
As an example, I use parameter drivers to drive local bools for toggling parts of my avatar's body, to prevent clipping through clothes. This system works on Live (1282), but breaks on Beta (1284) - see second attached image, with skin peeking through hoodie due to the transitions not firing. Other, more complex systems (such as custom locomotion controllers) would be more negatively affected.

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