When updating a stored event from outlier to non-outlier, remember to update the extremeties

synapse/storage/event_federation.py

@@ -303,6 +303,9 @@ class EventFederationStore(SQLBaseStore):
             ],
         )
 
+        self._update_extremeties(txn, events)
+
+    def _update_extremeties(self, txn, events):
         events_by_room = {}
         for ev in events:
             events_by_room.setdefault(ev.room_id, []).append(ev)

synapse/storage/events.py

@@ -275,6 +275,8 @@ class EventsStore(SQLBaseStore):
                     (False, event.event_id,)
                 )
 
+                self._update_extremeties(txn, [event])
+
         events_and_contexts = filter(
             lambda ec: ec[0] not in to_remove,
             events_and_contexts