on MPU 563, the Big Sur episode, @ismh and @MacSparky mentioned that searching all mail from the search box meant clicking something to work.
I’ve been using search in big sur since it came out, and it always searches all mailboxes for me.
Whatever mailbox I’m in, it will always default to searching all mail. Which then appears as a “search” entry at the top of the sidebar.
Am I missing something here?