diff --git a/Assets/_Project/Scripts/UI/HUDController.cs b/Assets/_Project/Scripts/UI/HUDController.cs
index 450e0f9..9ff9ca4 100644
--- a/Assets/_Project/Scripts/UI/HUDController.cs
+++ b/Assets/_Project/Scripts/UI/HUDController.cs
@@ -2169,10 +2169,22 @@ namespace TD.UI
 
             // Fallback: LobbyService isn't spawned (e.g. testing the gameplay
             // scene standalone without the lobby flow). Hard-reload the scene.
-            Debug.LogWarning("[HUDController] LobbyService not found — falling back to scene reload.");
+            //
+            // Do NOT reload via NetworkManager.SceneManager here. Reloading the
+            // currently-active scene through NGO's networked scene manager in
+            // Single mode deadlocks: SceneEventProgress unloads the active scene
+            // then waits on a load-complete ack for the same scene handle it is
+            // mid-transition on, which never arrives — the main thread hangs
+            // (beachball). LoadSceneAsHost is safe only because it loads a
+            // *different* scene (Lobby). With no LobbyService there is no real
+            // multiplayer session worth preserving, so shut the host down and do
+            // a plain, non-networked Unity scene reload instead.
+            Debug.LogWarning("[HUDController] LobbyService not found — falling back to non-networked scene reload.");
+            string activeScene = SceneManager.GetActiveScene().name;
             var nm = NetworkManager.Singleton;
-            if (nm != null && nm.IsServer && nm.SceneManager != null)
-                nm.SceneManager.LoadScene(SceneManager.GetActiveScene().name, LoadSceneMode.Single);
+            if (nm != null && nm.IsListening)
+                nm.Shutdown();
+            SceneManager.LoadScene(activeScene, LoadSceneMode.Single);
         }
 
         // Return to Main Menu: disconnect only this player. SessionFlow's