Update

Assets/Scripts/Network/BasicSpawner.cs

@@ -38,19 +38,23 @@ namespace Hallucinate.UI
 
         private async Task EnsureRunnerExists()
         {
-            if (_runner != null)
+            if (_runner == null)
             {
-                // Nếu runner cũ vẫn đang chạy hoặc lỗi, dọn dẹp nó
-                await _runner.Shutdown();
-                if (_runner != null && _runner.gameObject != null)
-                {
-                    Destroy(_runner);
-                }
-                _runner = null;
+                _runner = GetComponent<NetworkRunner>();
+            }
+
+            if (_runner != null && _runner.IsRunning)
+            {
+                await _runner.Shutdown();
+            }
+
+            if (_runner == null)
+            {
+                _runner = gameObject.AddComponent<NetworkRunner>();
             }
 
-            _runner = gameObject.AddComponent<NetworkRunner>();
             _runner.ProvideInput = true;
+            _runner.RemoveCallbacks(this);
             _runner.AddCallbacks(this);
         }
 
@@ -186,12 +190,17 @@ namespace Hallucinate.UI
             {
                 runner.Despawn(networkObject);
                 _spawnedCharacters.Remove(player);
-                if (runner.IsServer) runner.Shutdown();
+                // Chỉ Shutdown nếu người thoát chính là Server (Host)
+                if (runner.IsServer && player == runner.LocalPlayer) 
+                {
+                    runner.Shutdown();
+                }
             }
         }
 
         public void OnShutdown(NetworkRunner runner, ShutdownReason shutdownReason)
         {
+            Debug.LogWarning($"[Fusion] Shutdown occurred. Reason: {shutdownReason}");
             OnShutdownEvent?.Invoke(shutdownReason.ToString());
         }