diff -r 7b1b88e27a20 -r 48c4eec2b7e6 wp/wp-includes/css/jquery-ui-dialog.css
--- a/wp/wp-includes/css/jquery-ui-dialog.css	Thu Sep 29 08:06:27 2022 +0200
+++ b/wp/wp-includes/css/jquery-ui-dialog.css	Fri Sep 05 18:40:08 2025 +0200
@@ -312,9 +312,7 @@
 }
 
 .ui-button.ui-dialog-titlebar-close:focus {
-	box-shadow:
-		0 0 0 1px #4f94d4,
-		0 0 2px 1px rgba(79, 148, 212, 0.8);
+	box-shadow: 0 0 0 2px #2271b1;
 	/* Only visible in Windows High Contrast mode */
 	outline: 2px solid transparent;
 	outline-offset: -2px;