Fixed host observer callack invoke

Author: TwoTenPvP

MLAPI/MonoBehaviours/Core/NetworkingManager.cs

@@ -569,7 +569,11 @@ public void StartHost(Vector3? pos = null, Quaternion? rot = null, int prefabId
 
             prefabId = prefabId == -1 ? SpawnManager.GetNetworkedPrefabIndexOfName(NetworkConfig.PlayerPrefabName) : prefabId;
             NetworkedObject netObject = SpawnManager.CreateSpawnedObject(prefabId, 0, hostClientId, true, NetworkSceneManager.CurrentActiveSceneIndex, false, false, pos.GetValueOrDefault(), rot.GetValueOrDefault(), true, null, false, 0, false);
-            netObject.observers.Add(hostClientId);
+
+            if (netObject.CheckObjectVisibility == null || netObject.CheckObjectVisibility(hostClientId))
+            {
+                netObject.observers.Add(hostClientId);
+            }
 
             SpawnSceneObjects();