fix mnini map npc process

Assets/PerfectWorld/Scripts/UI/MiniMap/CDlgMiniMap.cs

@@ -148,11 +148,11 @@ namespace PerfectWorld.UI.MiniMap
 
             UniTask.RunOnThreadPool(async () =>
             {
-                await WatchNPCMiniMapData(npcMan, token);
+                await UpdateNPCMiniMapDataTask(npcMan, token);
             }, false, cancellationToken: token).Forget();
         }
 
-        private async UniTask WatchNPCMiniMapData(CECNPCMan npcMan, CancellationToken token)
+        private async UniTask UpdateNPCMiniMapDataTask(CECNPCMan npcMan, CancellationToken token)
         {
             List<CECNPCMan.NPCMiniMapData> lastNPCData = new();
 
@@ -168,7 +168,8 @@ namespace PerfectWorld.UI.MiniMap
                             _pendingNPCMiniMapData = currentNPCData;
                         }
 
-                        lastNPCData = currentNPCData;
+                        lastNPCData.Clear();
+                        lastNPCData.AddRange(currentNPCData);
                         _needRenderNPCMiniMap = true;
                     }
 
@@ -207,6 +208,10 @@ namespace PerfectWorld.UI.MiniMap
             return true;
         }
 
+        /// <summary>
+        /// Render the following objects on the minimap: <br/>
+        ///  - NPC_ESSENCE <br/>
+        /// </summary>
         private void RenderNPCMiniMap()
         {
             List<CECNPCMan.NPCMiniMapData> npcData;