#5483 "Alerts list: a covering rule's hosts start collapsed behind a toggle; no dashed rows", from the operator's review of the Alerts list. Each rule is its own tbody; its hosts sit in another, hidden until "N hosts" is pressed. A rule with a host that isn't quiet opens on its own and names the host where "last fired" was, so a problem never hides behind the fold. Host rows lose the dashed rules for a sunken band under the indent. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>