Incorporate review

changelog.d/6329.bugfix

@@ -0,0 +1 @@
+Correctly apply the event filter to the `state`, `events_before` and `events_after` fields in the response to `/context` requests.

changelog.d/6329.feature

@@ -1 +0,0 @@
-Filter `state`, `events_before` and `events_after` in `/context` requests.

synapse/handlers/room.py

@@ -908,12 +908,11 @@ class RoomContextHandler(object):
             [last_event_id], state_filter=state_filter
         )
 
-        # Apply the filter on state events.
         state_events = list(state[last_event_id].values())
         if event_filter:
             state_events = event_filter.filter(state_events)
 
-        results["state"] = list(state_events)
+        results["state"] = state_events
 
         # We use a dummy token here as we only care about the room portion of
         # the token, which we replace.