diff --git a/src/viewer/index.html b/src/viewer/index.html
index a4bcd4389..5cfdccb04 100644
--- a/src/viewer/index.html
+++ b/src/viewer/index.html
@@ -1468,14 +1468,18 @@ <h1>agentmemory</h1>
     }
 
     var dashboardLoadPromise = null;
+    var dashboardRefreshPending = false;
     async function loadDashboard() {
       if (dashboardLoadPromise) return dashboardLoadPromise;
-      dashboardLoadPromise = loadDashboardOnce();
-      try {
-        return await dashboardLoadPromise;
-      } finally {
-        dashboardLoadPromise = null;
-      }
+      do {
+        dashboardRefreshPending = false;
+        dashboardLoadPromise = loadDashboardOnce();
+        try {
+          await dashboardLoadPromise;
+        } finally {
+          dashboardLoadPromise = null;
+        }
+      } while (dashboardRefreshPending);
     }
 
     async function loadDashboardOnce() {
@@ -1793,7 +1797,8 @@ <h1>agentmemory</h1>
     var dashboardTimer = null;
     function refreshDashboard() {
       state.dashboard.loaded = false;
-      loadDashboard();
+      if (dashboardLoadPromise) dashboardRefreshPending = true;
+      return loadDashboard();
     }
     function startDashboardAutoRefresh() {
       if (dashboardTimer) clearInterval(dashboardTimer);
@@ -3810,8 +3815,7 @@ <h1>agentmemory</h1>
       pollTimer = setInterval(function() {
         tick++;
         if (state.activeTab === 'dashboard') {
-          state.dashboard.loaded = false;
-          loadDashboard();
+          refreshDashboard();
         } else if (state.activeTab === 'memories') {
           state.memories.loaded = false;
           loadMemories();
@@ -3975,8 +3979,7 @@ <h1>agentmemory</h1>
         }
       }
       if (state.activeTab === 'dashboard') {
-        state.dashboard.loaded = false;
-        loadDashboard();
+        refreshDashboard();
       }
       if (state.activeTab === 'activity' && msg.observation) {
         state.activity.observations.unshift(msg.observation);
diff --git a/test/viewer-session-id.test.ts b/test/viewer-session-id.test.ts
index c4a6a90c3..6c2f88834 100644
--- a/test/viewer-session-id.test.ts
+++ b/test/viewer-session-id.test.ts
@@ -208,6 +208,29 @@ describe("viewer session rendering", () => {
     ]);
   });
 
+  it("runs one pending refresh after an in-flight dashboard load", async () => {
+    const { sandbox } = loadViewerSandbox();
+    const paths: string[] = [];
+    let releaseSessions: (() => void) | undefined;
+    sandbox.fetch = async (url: string) => {
+      paths.push(new URL(url).pathname);
+      if (paths.length === 2) {
+        await new Promise<void>((resolve) => {
+          releaseSessions = resolve;
+        });
+      }
+      return { ok: true, json: async () => ({}) };
+    };
+
+    const initialLoad = sandbox.loadDashboard();
+    while (!releaseSessions) await Promise.resolve();
+    const pendingRefresh = sandbox.refreshDashboard();
+    releaseSessions();
+    await Promise.all([initialLoad, pendingRefresh]);
+
+    expect(paths).toHaveLength(20);
+  });
+
   it("attaches the saved viewer bearer to API calls", async () => {
     const { sandbox } = loadViewerSandbox();
     const requests: Array<{ url: string; opts: { headers?: Record<string, string> } }> = [];