[BUG][libgdx-runtime] After animation mixed, the previous scale set to root bone is cleared.

[danielchow]

In MixTest.java, line 54 and 55, I set scaleX and scaleY to 0.5f then run the application.

I expected the spineboy walk and jump at scale of 50%, however when he starts jump, he scales back to 100%.

[danielchow]

Turns out it's because the jump animation of spine boy set scale as key although it doesn't animate scale. I removed the scale and it works like a charm.