From ea2294e901532563b2d0da4c8edd029ad481f487 Mon Sep 17 00:00:00 2001
From: Vanessa <lly219@gmail.com>
Date: Thu, 4 Sep 2025 12:11:22 +0800
Subject: [PATCH] :art: https://github.com/siyuan-note/siyuan/issues/15761

---
 app/src/protyle/wysiwyg/input.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/app/src/protyle/wysiwyg/input.ts b/app/src/protyle/wysiwyg/input.ts
index 21105e8c9..8ec43da4a 100644
--- a/app/src/protyle/wysiwyg/input.ts
+++ b/app/src/protyle/wysiwyg/input.ts
@@ -37,6 +37,10 @@ export const input = async (protyle: IProtyle, blockElement: HTMLElement, range:
         } else if (type === "NodeBlockQueryEmbed") {
             blockElement.lastElementChild.previousElementSibling.innerHTML = "<wbr>" + Constants.ZWSP;
         } else if (type === "NodeMathBlock" || type === "NodeHTMLBlock") {
+            // https://github.com/siyuan-note/siyuan/issues/15761
+            if (blockElement.firstElementChild.firstChild.nodeType === 3) {
+                blockElement.firstElementChild.firstChild.remove();
+            }
             blockElement.lastElementChild.previousElementSibling.lastElementChild.innerHTML = "<wbr>" + Constants.ZWSP;
         } else if (type === "NodeIFrame" || type === "NodeWidget") {
             blockElement.innerHTML = "<wbr>" + blockElement.firstElementChild.outerHTML + blockElement.lastElementChild.outerHTML;