On a sent proposal's page, The client page opens the proposal in a new window as the client sees it, with the package and options they have chosen so far. The page no longer shows a copy of the whole proposal under the recipients, and Preview the client page is no longer in More. Choices you try in the new window are not saved.
On the client page, a click anywhere in a package's box chooses that package. Before, only the round button and the package's name chose it.