When a component uses properties to control nested instances inside a slot e.g. color, overriding any properties of the nested instance e.g. a text property, causes the parent component's properties to stop cascading into it. The only recovery path is a full instance reset, which wipes any existing overrides in the process.
As a result, for all components where parent properties control nested slot instances, the new slots feature cannot be adopted within our design system. I’ve attached a short video recording to demonstrate the issue. Thanks!
