How do you catch "Make Unique"?

[thomthom]

I need to catch when a component is made unique.
I have an DefinitionsObserver which triggers when the new component is added, but at that found the .instances for that definition is empty. So I need to work out when a component is made unique and is fully ready to return its instances.

I want to avoid using timers.

[TIG]

An entities observer that limits itself to instances could spot when that instance's definition changes ?

[thomthom]

The onContentsModified event is broken...