From 9c68ceafeb8ac9990e0c0c64a47796395299d604 Mon Sep 17 00:00:00 2001
From: Paulo Victor Cordeiro <146781332+pvcordeiro@users.noreply.github.com>
Date: Tue, 2 Jun 2026 17:55:59 +0100
Subject: [PATCH] fix: use cached blob URL in _createChip to prevent memory
 leak (#1266)

_createChip called URL.createObjectURL directly, bypassing the
_getPreviewUrl/_revokePreviewUrl cache. Each re-render of the
attachment strip leaked blob URLs that were never revoked.
---
 static/js/fileHandler.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/static/js/fileHandler.js b/static/js/fileHandler.js
index 9e5dbad..e62382d 100644
--- a/static/js/fileHandler.js
+++ b/static/js/fileHandler.js
@@ -112,7 +112,7 @@ function _createChip(f, idx) {
     chip.classList.add('thumb-image');  // lets CSS overlay the remove-X on the corner (mobile)
     const img = document.createElement('img');
     img.className = 'thumb-img';
-    img.src = URL.createObjectURL(f);
+    img.src = _getPreviewUrl(f);
     img.alt = f.name || 'image';
     chip.appendChild(img);
   } else {