Fixed issue when yield returning same request

Nautilus/Assets/ModPrefabCache.cs

@@ -111,7 +111,7 @@ public void EnterPrefabIntoCache(GameObject prefab)
         if(!Entries.ContainsKey(prefabIdentifier.classId))
         {
             Entries.Add(prefabIdentifier.classId, prefab);
-            InternalLogger.Debug($"ModPrefabCache: adding prefab {prefab}");
+            InternalLogger.Debug($"ModPrefabCache: added prefab {prefab}");
         }
         else // this should never happen
         {

Nautilus/Assets/ModPrefabRequest.cs

@@ -7,12 +7,14 @@
 namespace Nautilus.Assets;
 
 // request for getting ModPrefab asynchronously
-internal class ModPrefabRequest: IPrefabRequest, IEnumerator
+internal class ModPrefabRequest: IPrefabRequest
 {
+    internal bool Done { get; private set; }
+
     private readonly PrefabInfo prefabInfo;
-
-    private int state = 0;
+
     private CoroutineTask<GameObject> task;
+
     private TaskResult<GameObject> taskResult;
 
     public ModPrefabRequest(PrefabInfo prefabInfo)
@@ -50,13 +52,22 @@ public object Current
     public bool TryGetPrefab(out GameObject result)
     {
         result = taskResult.Get();
+        if (!Done)
+        {
+            Done = result;
+        }
         return result != null;
     }
 
     public bool MoveNext()
     {
         Init();
-        return state++ == 0;
+        if (task == null)
+        {
+            return false;
+        }
+
+        return !TryGetPrefab(out _);
     }
 
     public void Reset() {}

Nautilus/Patchers/PrefabDatabasePatcher.cs

@@ -80,7 +80,14 @@ private static IPrefabRequest GetModPrefabAsync(string classId)
         }
 
         if(ModPrefabCache.Requests.TryGetValue(prefabInfo.ClassID, out var request))
+        {
+            if (request.Done && !request.TryGetPrefab(out _))
+            {
+                return new ModPrefabRequest(prefabInfo);
+            }
+
             return request;
+        }
 
         return new ModPrefabRequest(prefabInfo);
     }