This is really weird...
The green cross is exactly where it should be.But when the bottle is present in the scene the stopper is not rotating as it should.If I just delete the bottle , then the stopper rotates as it should.
It seems that I canot fix this , and have both items in the scene.
And yes, they are characters because I want to apply different textures to them.I have tried this with props , worked once , and since then I was unable to make it work again unless they were characters.In other words , they are characters so I can use interchangeable textures for them.