From eea631f69e496c2c3179fef023a642de06c37d29 Mon Sep 17 00:00:00 2001
From: Anon <bgteam@live.com>
Date: Mon, 27 Jul 2026 00:35:18 +0200
Subject: [PATCH] fix: preserve queued disconnect reason

---
 MinecraftClient/Protocol/Handlers/Protocol18.cs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/MinecraftClient/Protocol/Handlers/Protocol18.cs b/MinecraftClient/Protocol/Handlers/Protocol18.cs
index 968e6465..86ad7364 100644
--- a/MinecraftClient/Protocol/Handlers/Protocol18.cs
+++ b/MinecraftClient/Protocol/Handlers/Protocol18.cs
@@ -304,7 +304,10 @@ namespace MinecraftClient.Protocol.Handlers
             {
                 Stopwatch stopWatch = Stopwatch.StartNew();
                 long nextUpdateDue = 0;
-                while (!packetQueue.IsAddingCompleted)
+                // Continue until the reader has finished and every queued packet has been handled.
+                // A server can close immediately after a Disconnect packet, completing the queue
+                // while that final packet is still waiting to be processed.
+                while (!packetQueue.IsCompleted)
                 {
                     cancelToken.ThrowIfCancellationRequested();