Rotation problem with ThreeJS

Question

Hello!
I made the sample code below to play with a JavaScript framework named ThreeJS - several of you are probably much more familiar with than your humble serviteur here... so what is wrong with the rotation of the green body ? If you wait for a moment, the green body behaviour is changing.
I am interested in understanding this.
Thx!!
And happy New Year.

https://code.sololearn.com/W5UbbZWYWLut/?ref=app

Answer 1

Taste