Hotfix for issue #3282.

(projector autoupdate problem by deleting projected object)

openslides/utils/collection.py

@@ -106,6 +106,8 @@ class CollectionElement:
         if method == 'get_restricted_data':
             container = self
         else:
+            # TODO: Find a better solution for this hotfix, see issue #3282.
+            if not self.is_deleted():
                 container = self.get_full_data()
         # End of hack