From 97b657da6d7ca73f621ecacadd636ca3f31212c2 Mon Sep 17 00:00:00 2001
From: Scott Nonnenberg <scott@signal.org>
Date: Mon, 4 May 2020 15:05:01 -0700
Subject: [PATCH] MessageReceiver: Drop sync messages with GroupContextV2

---
 ts/textsecure/MessageReceiver.ts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/ts/textsecure/MessageReceiver.ts b/ts/textsecure/MessageReceiver.ts
index 9d95b2b24..801b95bdf 100644
--- a/ts/textsecure/MessageReceiver.ts
+++ b/ts/textsecure/MessageReceiver.ts
@@ -1045,6 +1045,14 @@ class MessageReceiverInner extends EventTarget {
       throw new Error('MessageReceiver.handleSentMessage: message was falsey!');
     }
 
+    if (msg.groupV2) {
+      window.log.warn(
+        'MessageReceiver.handleSentMessage: Dropping GroupsV2 message'
+      );
+      this.removeFromCache(envelope);
+      return;
+    }
+
     let p: Promise<any> = Promise.resolve();
     // eslint-disable-next-line no-bitwise
     if (