Correctly register shutdown handler for presence workers (#11518)

Fixes #11517

2 files changed, 2 insertions, 1 deletions

diff --git a/changelog.d/11518.bugfix b/changelog.d/11518.bugfix
new file mode 100644

index 0000000000..3c27382c7a
--- /dev/null
+++ b/changelog.d/11518.bugfix
@@ -0,0 +1 @@
+Fix a regression in Synapse 1.48.0 where presence workers would not clear their presence updates over replication on shutdown.
diff --git a/synapse/handlers/presence.py b/synapse/handlers/presence.py

index 3df872c578..454d06c973 100644
--- a/synapse/handlers/presence.py
+++ b/synapse/handlers/presence.py
@@ -421,7 +421,7 @@ class WorkerPresenceHandler(BasePresenceHandler):
             self._on_shutdown,
         )
 
-    def _on_shutdown(self) -> None:
+    async def _on_shutdown(self) -> None:
         if self._presence_enabled:
             self.hs.get_tcp_replication().send_command(
                 ClearUserSyncsCommand(self.instance_id)