I don't know what I'm doing wrong but running the v4 renderer benchmark example:

the engine just doesn't batch any draw at all for me. Even when using spine-webgl there were at least some batch

I've clone a fresh new spine runtimes repo, confirm that I'm on spine-ts 4.3 branch (even higher than release 4.3.11), npm i, confirm that's I'm using phaser 4.2.1, yet the test show nothing like the blog draw call batch demo. Can you support me finding out what's wrong?
Edit: Disable slot object bring draws number similar to spine-webgl renderer (103). Still, that nowhere near what it supposed to be, isn't it?
Edit 2: If I change the animation to walk, then it was batched to 1 correctly. What's the different between those 2 animations that cause batching break?