diff --git a/frontend/packages/dashboard/src/tabs.js b/frontend/packages/dashboard/src/tabs.js
index 60feefbb..c9ef2aa6 100644
--- a/frontend/packages/dashboard/src/tabs.js
+++ b/frontend/packages/dashboard/src/tabs.js
@@ -1574,8 +1574,6 @@ window.marked = marked;
     root.replaceChildren();
     const fmt = (n) => new Date(n * 1000).toISOString().replace('T', ' ').slice(0, 19);
     const allPending = questionsState.pending;
-    const activeFilter = getQuestionsFilter();
-    const pending = allPending.filter((q) => questionMatchesFilter(q, activeFilter));
 
     // Filter chips. Always include `all` / `operator` / `peer`; add
     // per-agent chips for any agent that appears as asker or target
@@ -1586,6 +1584,24 @@ window.marked = marked;
       participants.add(q.asker);
       if (q.target) participants.add(q.target);
     }
+
+    // Auto-reset a stale per-agent filter: if the operator had `agent:foo`
+    // selected and all of foo's questions resolved, foo's chip disappears
+    // from the row. Without a reset the section would show "no questions
+    // match this filter" with no active chip visible — confusing. Fall back
+    // to `all` whenever the stored value is no longer a valid chip value.
+    let activeFilter = getQuestionsFilter();
+    const validFilters = new Set(['all', 'operator', 'peer',
+      ...Array.from(participants).map((n) => 'agent:' + n)]);
+    if (!validFilters.has(activeFilter)) {
+      activeFilter = 'all';
+      // Write directly to localStorage to avoid the re-render that
+      // setQuestionsFilter() triggers (we're already mid-render).
+      localStorage.setItem(QUESTIONS_FILTER_KEY, 'all');
+    }
+
+    const pending = allPending.filter((q) => questionMatchesFilter(q, activeFilter));
+
     const filterRow = el('div', { class: 'questions-filters' });
     const mkChip = (value, label) => {
       const b = el('button', {