From 07063fef82562b25dbd42e2ca72eee9773577133 Mon Sep 17 00:00:00 2001
From: NichtStudioCode <51272202+NichtStudioCode@users.noreply.github.com>
Date: Mon, 10 Apr 2023 12:10:35 +0200
Subject: [PATCH] Fix ConcurrentModificationException on server stop

---
 .../src/main/java/xyz/xenondevs/invui/window/WindowManager.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/invui/src/main/java/xyz/xenondevs/invui/window/WindowManager.java b/invui/src/main/java/xyz/xenondevs/invui/window/WindowManager.java
index c4d11bc..689072b 100644
--- a/invui/src/main/java/xyz/xenondevs/invui/window/WindowManager.java
+++ b/invui/src/main/java/xyz/xenondevs/invui/window/WindowManager.java
@@ -31,7 +31,7 @@ public class WindowManager implements Listener {
     
     private WindowManager() {
         Bukkit.getPluginManager().registerEvents(this, InvUI.getInstance().getPlugin());
-        InvUI.getInstance().addDisableHandler(() -> windows.values().forEach(window -> window.remove(true)));
+        InvUI.getInstance().addDisableHandler(() -> new HashSet<>(windows.values()).forEach(window -> window.remove(true)));
     }
     
     /**