From f4c1f43644eb4a30d185518c1732b24aa821e39d Mon Sep 17 00:00:00 2001
From: delvh <dev.lh@web.de>
Date: Tue, 4 Jul 2023 16:43:02 +0200
Subject: [PATCH] Prevent duplicate image loading (#25675)

Regression of #25672.
---
 web_src/js/features/imagediff.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/web_src/js/features/imagediff.js b/web_src/js/features/imagediff.js
index a26b927c33..2e7baab79f 100644
--- a/web_src/js/features/imagediff.js
+++ b/web_src/js/features/imagediff.js
@@ -65,8 +65,9 @@ export function initImageDiff() {
     };
   }
 
-  $('.image-diff').each(function() {
+  $('.image-diff:not([data-image-diff-loaded])').each(function() {
     const $container = $(this);
+    $container.attr('data-image-diff-loaded', 'true');
 
     // the container may be hidden by "viewed" checkbox, so use the parent's width for reference
     const diffContainerWidth = Math.max($container.closest('.diff-file-box').width() - 300, 100);