Additive animation layer issue

Questions & Answers
1

Ok so I have a Mecanim character using a humanoid rig. On the base layer, most of the animations are taking place. I have a second additive animation layer that controls the character blinking randomly. Both of these things work great.

The problem I’m having now, is that I have added a third layer that is going to be used for expressions. I would like this layer to be additive, but it isn’t actually working. If I switch it to override, the animation does what I want it to, but it is ruining the rest of my head and neck animation AND it has blocked the blinking animation from working. I do have masks properly set up as well. I have even tried taking the blink layer out and it still doesnt work as additive on its own.

Any idea on how to fix this issue?

2

additive only works when you are using animations and values are changing over time it wont work for blending poses , that is you need to have animation from pose A to pose B , it shouldn’t be at pose A all frames

3

I see this issue still on Unity 2018.3
My workaround was to have a static 1 frame pose on state A and a 2 frame animation on state B
This will blend transition from state A to state B frame 2.

It is weird that it doesnt work other way.