From 3e1333319aacff96856a3c161b8787ff6b0ddd6b Mon Sep 17 00:00:00 2001
From: Julius Marminge <julius0216@outlook.com>
Date: Sat, 5 Sep 2026 00:15:32 -0700
Subject: [PATCH] fix(web): reset markdown widgets when the previewed file
 changes (#9910)

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
---
 apps/web/src/components/files/FilePreviewPanel.tsx | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/apps/web/src/components/files/FilePreviewPanel.tsx b/apps/web/src/components/files/FilePreviewPanel.tsx
index 3f0c92742ca7acc5ccd4fa8649f1f6dd07a22999..33d4d9a4b6cf310c7b6a383e37d20de06333c568 100644
--- a/apps/web/src/components/files/FilePreviewPanel.tsx
+++ b/apps/web/src/components/files/FilePreviewPanel.tsx
@@ -1266,7 +1266,11 @@ export default function FilePreviewPanel({
             </div>
           ) : relativePath && file.data ? (
             isMarkdown && renderMarkdown ? (
+              // Markdown reconciles in place across text updates, so a file
+              // switch needs a new key or the previous file's disclosure and
+              // wrap state carries into the next document.
               <RenderedMarkdownSurface
+                key={relativePath}
                 environmentId={environmentId}
                 cwd={cwd}
                 relativePath={relativePath}
-- 
2.54.0