I love the new UI widget for selecting a lens in assistant! But I've noticed that if I use a custom assistant which uses a lens, and then switch to a generic model, the UI will continue to use the lens from the custom assistant instead of switching back to "Entire Web".
I would expect it to default to "Entire Web" when using a generic model (or perhaps maintain some state for whatever lens I've selected when using generic models) and switch to a custom assistant's lens setting whenever selecting that.