diff --git a/app/src/protyle/wysiwyg/input.ts b/app/src/protyle/wysiwyg/input.ts
index 29947a70e..349d4bd3b 100644
--- a/app/src/protyle/wysiwyg/input.ts
+++ b/app/src/protyle/wysiwyg/input.ts
@@ -64,7 +64,8 @@ export const input = async (protyle: IProtyle, blockElement: HTMLElement, range:
         }
     }
     const id = blockElement.getAttribute("data-node-id");
-    if (type !== "NodeCodeBlock" && (editElement.innerHTML.endsWith("\n<wbr>") || editElement.innerHTML.endsWith("\n<wbr>\n"))) {
+    if ((type !== "NodeCodeBlock" && type !== "NodeHeading") && // https://github.com/siyuan-note/siyuan/issues/11851
+        (editElement.innerHTML.endsWith("\n<wbr>") || editElement.innerHTML.endsWith("\n<wbr>\n"))) {
         // 软换行
         updateTransaction(protyle, id, blockElement.outerHTML, protyle.wysiwyg.lastHTMLs[id] || blockElement.outerHTML.replace("\n<wbr>", "<wbr>"));
         wbrElement.remove();