From 565b9f983d8d99164bb2345e7c204e502635251a Mon Sep 17 00:00:00 2001
From: Travis Ralston <travisr@matrix.org>
Date: Wed, 19 Jul 2023 15:49:11 -0600
Subject: Fix https://github.com/matrix-org/synapse/issues/15962

Not breaking anything in LM, but might as well while we're here.
---
 synapse/events/utils.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/synapse/events/utils.py b/synapse/events/utils.py
index a558d915aa..c692b4008d 100644
--- a/synapse/events/utils.py
+++ b/synapse/events/utils.py
@@ -149,7 +149,8 @@ def prune_event_dict(room_version: RoomVersion, event_dict: JsonDict) -> JsonDic
         if room_version.msc2176_redaction_rules:
             new_content = event_dict["content"]
 
-        add_fields("creator")
+        if not room_version.msc2175_implicit_room_creator:
+            add_fields("creator")
     elif event_type == EventTypes.JoinRules:
         add_fields("join_rule")
         if room_version.msc3083_join_rules:
-- 
cgit 1.5.1