Right now, closing an Atlas window clears all tabs, even the ones I have pinned or organized into groups. When I re-open the browser, my pinned tabs and groups are gone.
It would be great for pinned tabs and tab groups to behave more like a persistent dock so when I reopen Atlas, the grouped and pinned tabs from my previous session should still be there. Any unpinned or ungrouped tabs could still be cleared on close to avoid clutter.