In the production part of the project I'm currently working

Slowly rotate or recyclable haebomyeon continue to repeat the animation

The irregular disconnection occurs.

This phenomenon is not just occurring only in the spine tools

After applying the Unity project to export data and build in application of the actual phone

Applications in the game and have the same problem.
  
I would like to know clearly what is causing the problem.

See video link

If he uses an object to bone mass

If you use a small amount of bone objects

Note The project file has produced a version 3.4.02.