Multiple objects with same id

In my scene, I have multiple object with same id(176)

one of that is mesh which I added, and other one is child of transformControls.

is is unique or not?

Yes, should be unique (source.) One exception I can imagine is if your main app and transform controls module would use separate instances of three (imported from different places.)

Could you share your code / jsfiddle / codepen replicating the issue?


You are right.
by my mistake both use different three.module.js module.