Came here to downvote the new extensions UI. It's not well thought out at all. It's less functional, less customizable, and less friendly than what I had previously. The UI is mine--MINE--and I want control over it. Do you understand this about your ...
The solution is simple: when a hidden extension needs my attention, throw an extension attention badge on the menu icon. You do it for updates and other alerts. Why not repeat this proven UI/UX construct for this new manifest feature?