diff options
| -rw-r--r-- | synapse/handlers/message.py | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py index 5d18aaacf0..bca592f5d7 100644 --- a/synapse/handlers/message.py +++ b/synapse/handlers/message.py @@ -120,6 +120,10 @@ class MessageHandler(BaseHandler): if source_config.direction == "f": if source_config.to_key is None: source_config.to_key = str(leave_token) + else: + to_token = RoomStreamToken.parse(source_config.to_key) + if leave_token.topological < to_token.topological: + source_config.to_key = str(leave_token) yield self.hs.get_handlers().federation_handler.maybe_backfill( room_id, room_token.topological |