Add m.room.history_visibility to newly created rooms' m.room.power_levels

synapse/api/auth.py

@@ -575,6 +575,7 @@ class Auth(object):
         levels_to_check = [
             ("users_default", []),
             ("events_default", []),
+            ("state_default", []),
             ("ban", []),
             ("redact", []),
             ("kick", []),

synapse/handlers/room.py

@@ -213,6 +213,7 @@ class RoomCreationHandler(BaseHandler):
                 "events": {
                     EventTypes.Name: 100,
                     EventTypes.PowerLevels: 100,
+                    EventTypes.RoomHistoryVisibility: 100,
                 },
                 "events_default": 0,
                 "state_default": 50,