Hi: When I create a component, I can only add it to the "Document Assets" library. I would love to be able to navigate to a different Library while inside my current document and add it there. I believe "Cloud Libraries" used to work this way.
You may want to check if those components are still updating if you change theirs master in the original Library. Last time I've checked they were updating only in the original Library, not in others where it was added afterwards with that "+" button.