From ef4deeae58950e06106b897df7fe95e0f742bb9e Mon Sep 17 00:00:00 2001
From: Vanessa <lly219@gmail.com>
Date: Fri, 10 Oct 2025 10:36:03 +0800
Subject: [PATCH] :art: https://github.com/siyuan-note/siyuan/issues/16047

---
 app/src/protyle/wysiwyg/transaction.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/src/protyle/wysiwyg/transaction.ts b/app/src/protyle/wysiwyg/transaction.ts
index 6a498c9d0..4d4f0541d 100644
--- a/app/src/protyle/wysiwyg/transaction.ts
+++ b/app/src/protyle/wysiwyg/transaction.ts
@@ -1396,7 +1396,7 @@ const processFold = (operation: IOperation, protyle: IProtyle) => {
             highlightRender(protyle.wysiwyg.element);
             avRender(protyle.wysiwyg.element, protyle);
             blockRender(protyle, protyle.wysiwyg.element);
-            if (operation.context.focusId) {
+            if (operation.context?.focusId) {
                 const focusElement = protyle.wysiwyg.element.querySelector(`[data-node-id="${operation.context.focusId}"]`);
                 focusBlock(focusElement);
                 scrollCenter(protyle, focusElement, false);