diff --git a/llm-gateway/internal/dashboard/templates/layout.html b/llm-gateway/internal/dashboard/templates/layout.html
index aebd327..1b35132 100644
--- a/llm-gateway/internal/dashboard/templates/layout.html
+++ b/llm-gateway/internal/dashboard/templates/layout.html
@@ -325,17 +325,17 @@ window.matchMedia('(prefers-color-scheme: light)').addEventListener('change', fu
     source.onerror = function() {
       source.close();
       source = null;
-      // Exponential backoff, max 30s
       setTimeout(connect, retryDelay);
       retryDelay = Math.min(retryDelay * 2, 30000);
     };
   }
 
-  connect();
-  // Reconnect on HTMX page navigation (in case connection was lost)
-  document.body.addEventListener('htmx:pushedIntoHistory', function() {
-    if (!source || source.readyState === EventSource.CLOSED) connect();
+  // Close cleanly on page unload to avoid browser "interrupted" errors
+  window.addEventListener('beforeunload', function() {
+    if (source) { source.close(); source = null; }
   });
+
+  connect();
 })();
 // Update active sidebar link on HTMX navigation
 document.body.addEventListener('htmx:pushedIntoHistory', function(e) {