2 files changed, 4 insertions, 5 deletions
diff --git a/synapse/crypto/keyring.py b/synapse/crypto/keyring.py
index 1b1b31c5c0..8b6a59866f 100644
--- a/synapse/crypto/keyring.py
+++ b/synapse/crypto/keyring.py
@@ -228,10 +228,9 @@ class Keyring(object):
         def do_iterations():
             merged_results = {}
 
-            missing_keys = {
-                group.server_name: set(group.key_ids)
-                for group in group_id_to_group.values()
-            }
+            missing_keys = {}
+            for group in group_id_to_group.values():
+                missing_keys.setdefault(group.server_name, set()).union(group.key_ids)
 
             for fn in key_fetch_fns:
                 results = yield fn(missing_keys.items())
diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py
index 243623190f..bb5eef6bbd 100644
--- a/synapse/handlers/room.py
+++ b/synapse/handlers/room.py
@@ -38,7 +38,7 @@ class RoomCreationHandler(BaseHandler):
     PRESETS_DICT = {
         RoomCreationPreset.PRIVATE_CHAT: {
             "join_rules": JoinRules.INVITE,
-            "history_visibility": "invited",
+            "history_visibility": "shared",
             "original_invitees_have_ops": False,
         },
         RoomCreationPreset.PUBLIC_CHAT: {