Node add in animationTree just mix and no add.

[Vicmas21]

Godot version: 3.2 rc2

OS/device including version: Window 7 Ultimate Intel HD Graphic 3th generation

Issue description: The Node add in animationTree just mix positions, rotations and scales and no add this

Steps to reproduce: use the animationTree and change between add and blend states for test the node that do samething

Minimal reproduction project:
Add is Equal to Mix.zip

When try add a animation to other animation just do a interpolation between this...

[groud]

Please fill in the issue template instead of removing it.
I will reopen when this is done.

[Vicmas21]

Thanks you for say me, is that I am try of add a animation of look around to animation of walk and just blend this...

[Vicmas21]

Please, reopen this

[KoBeWi]

Can anyone still reproduce this bug in Godot 3.2.3 or any later release?

[Calinou]

Duplicate of #37661.