Thank you for the review, and for describing exactly what happened. That made it easy to find.
Google recently changed how it lays out its search results. With “Hide AI Overviews” on, Sieve ended up hiding the results along with the AI Overview, which left the All tab blank. The other tabs have no AI Overview, so they kept working.
It’s fixed in the next update (1.6.1). Sieve will hide only the AI Overview again, and I’ve added a safeguard so that no Google cleanup switch can hide your search results, even if Google changes its layout again.
Until the update reaches you, turning off “Hide AI Overviews” (Settings › Site cleanup › Google Search) brings the All tab back.
