How to reproduce:
1. Open given Unity project
2. Enter "NoMixer" scene
3. Enter Play Mode
4. Press Spacebar
-- Character animation is blending properly
5. Exit Play Mode
6. Enter "MixerBlend" scene
7. Enter Play Mode
8. Press Spacebar
-- Character animation is not blending correctly

Expected result: Character animation to blend properly in both scenes
Actual result: Character animation is blent properly only when it's made without mixer

Reproducible with: 2018.1.0b6, 2017.3.1p1, 2017.2.1p4, 2017.1.3p1,

Notes:
Cannot test on 5.6 and 2017.1 because of compiler errors