--- a/mod_muc_block_pm/mod_muc_block_pm.lua	Wed Jul 19 13:05:47 2023 +0200
+++ b/mod_muc_block_pm/mod_muc_block_pm.lua	Wed Jul 19 16:59:16 2023 +0200
@@ -13,6 +13,10 @@
 		return -- messaging moderators is ok
 	end
 
+	if to_occupant.bare_jid == from_occupant.bare_jid then
+		return -- to yourself is okay, used by some clients to sync read state in public channels
+	end
+
 	room:route_to_occupant(from_occupant, st.error_reply(stanza, "cancel", "policy-violation", "Private messages are disabled", room.jid))
 	return false;
 end, 1);