Fix infinite loop problem in processNewItems method

lib/services/entry_manager_service.dart

@@ -264,6 +264,7 @@ class EntryManagerService extends ChangeNotifier {
       return int.parse(i1.id).compareTo(int.parse(i2.id));
     });
     final postNodesToReturn = <_Node>{};
+    var lastCount = 0;
     while (allSeenItems.isNotEmpty) {
       final seenItemsCopy = [...allSeenItems];
       for (final item in seenItemsCopy) {
@@ -288,11 +289,17 @@ class EntryManagerService extends ChangeNotifier {
               continue;
             } else {
               injectionNode.addChild(newNode);
-              allSeenItems.remove(item);
             }
           }
+          allSeenItems.remove(item);
         }
       }
+      if (allSeenItems.isNotEmpty && allSeenItems.length == lastCount) {
+        _logger.severe(
+            'Had ${allSeenItems.length} items left over after all iterations');
+        break;
+      }
+      lastCount = allSeenItems.length;
     }
 
     final updatedPosts = postNodesToReturn