From 5150b9594c9feeaa6a45d14859cb2e84b3141a71 Mon Sep 17 00:00:00 2001
From: link2xt <link2xt@testrun.org>
Date: Fri, 13 Mar 2026 01:09:48 +0000
Subject: [PATCH] fix: do not send MDNs for hidden messages

Hidden messages are marked as seen
when chat is marked as noticed.
MDNs to such messages should not be sent
as this notifies the hidden message sender
that the chat was opened.

The issue discovered by Frank Seifferth.
---
 src/message.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/message.rs b/src/message.rs
index ccd41ccfe..fb89466d4 100644
--- a/src/message.rs
+++ b/src/message.rs
@@ -1934,6 +1934,7 @@ pub async fn markseen_msgs(context: &Context, msg_ids: Vec<MsgId>) -> Result<()>
             // We also don't send read receipts for contact requests.
             // Read receipts will not be sent even after accepting the chat.
             let to_id = if curr_blocked == Blocked::Not
+                && !curr_hidden
                 && curr_param.get_bool(Param::WantsMdn).unwrap_or_default()
                 && curr_param.get_cmd() == SystemMessage::Unknown
                 && context.should_send_mdns().await?