Don't alter directory entries for local users when setting a per-room nickname (#11002)

Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>

1 files changed, 13 insertions, 7 deletions

diff --git a/synapse/handlers/user_directory.py b/synapse/handlers/user_directory.py

index 97f60b5806..b7b1973346 100644
--- a/synapse/handlers/user_directory.py
+++ b/synapse/handlers/user_directory.py
@@ -203,6 +203,7 @@ class UserDirectoryHandler(StateDeltasHandler):
                     public_value=Membership.JOIN,
                 )
 
+                is_remote = not self.is_mine_id(state_key)
                 if change is MatchChange.now_false:
                     # Need to check if the server left the room entirely, if so
                     # we might need to remove all the users in that room
@@ -224,15 +225,20 @@ class UserDirectoryHandler(StateDeltasHandler):
                     else:
                         logger.debug("Server is still in room: %r", room_id)
 
-                include_in_dir = not self.is_mine_id(
-                    state_key
-                ) or await self.store.should_include_local_user_in_dir(state_key)
+                include_in_dir = (
+                    is_remote
+                    or await self.store.should_include_local_user_in_dir(state_key)
+                )
                 if include_in_dir:
                     if change is MatchChange.no_change:
-                        # Handle any profile changes
-                        await self._handle_profile_change(
-                            state_key, room_id, prev_event_id, event_id
-                        )
+                        # Handle any profile changes for remote users.
+                        # (For local users we are not forced to scan membership
+                        # events; instead the rest of the application calls
+                        # `handle_local_profile_change`.)
+                        if is_remote:
+                            await self._handle_profile_change(
+                                state_key, room_id, prev_event_id, event_id
+                            )
                         continue
 
                     if change is MatchChange.now_true:  # The user joined