From 6c4ca5f7a08143c6ace16f2c3002a5ccfd68d282 Mon Sep 17 00:00:00 2001
From: RootBeer <rootb33rman@gmail.com>
Date: Sat, 14 Nov 2026 21:19:51 -0500
Subject: [PATCH] Ignore packets received after the window was closed

If a packet closed the window, e.g. through a click handler, the packets queued behind it in the same tick were still processed on the closed window. Clicks could then take items that a close handler had already given back.
---
 .../xenondevs/invui/internal/menu/CustomContainerMenu.java    | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/invui/src/main/java/xyz/xenondevs/invui/internal/menu/CustomContainerMenu.java b/invui/src/main/java/xyz/xenondevs/invui/internal/menu/CustomContainerMenu.java
index 022eb1a4..6578d630 100644
--- a/invui/src/main/java/xyz/xenondevs/invui/internal/menu/CustomContainerMenu.java
+++ b/invui/src/main/java/xyz/xenondevs/invui/internal/menu/CustomContainerMenu.java
@@ -473,6 +473,10 @@ public UpdateType processIncoming() {
         Packet<? super ServerGamePacketListener> packet;
         UpdateType updateType = UpdateType.NONE;
         while ((packet = incoming.poll()) != null) {
+            if (serverPlayer.containerMenu != proxy) { // closed by a previous packet
+                incoming.clear();
+                break;
+            }
             updateType = updateType.or(processPacket(packet));
         }