process all the puzzles, not just the one

EduNetworkBuilder/NetworkBuilder.cs

@@ -2153,5 +2153,10 @@ namespace EduNetworkBuilder
         {
             InvisibleNetwork = null;
         }
+        public bool ProcessingInvisibleNet()
+        {
+            if(InvisibleNetwork == null) return false;
+            return true;
+        }
     }
 }