From 0e837c94ea090b6eb4b9bc65428ec28fd75d1d72 Mon Sep 17 00:00:00 2001
From: 1zuna <marco@ccbluex.net>
Date: Tue, 12 Mar 2024 08:09:27 +0100
Subject: [PATCH] fix: shutdown cause concurrent modification

---
 java/org/cef/CefClient.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/java/org/cef/CefClient.java b/java/org/cef/CefClient.java
index 39034ea6..707bb290 100644
--- a/java/org/cef/CefClient.java
+++ b/java/org/cef/CefClient.java
@@ -15,6 +15,7 @@
 
 import java.awt.*;
 import java.nio.ByteBuffer;
+import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.Vector;
@@ -498,7 +499,7 @@ private void cleanupBrowser(int identifier) {
                 browser_.remove(identifier);
             } else if (!browser_.isEmpty()) {
                 // Close all browsers.
-                Collection<CefBrowser> browserList = browser_.values();
+                Collection<CefBrowser> browserList = new ArrayList<>(browser_.values());
                 for (CefBrowser browser : browserList) {
                     browser.close(true);
                 }