diff --git a/app/src/assets/scss/protyle/_wysiwyg.scss b/app/src/assets/scss/protyle/_wysiwyg.scss
index 23ddc88236..e392561b25 100644
--- a/app/src/assets/scss/protyle/_wysiwyg.scss
+++ b/app/src/assets/scss/protyle/_wysiwyg.scss
@@ -200,6 +200,7 @@
       border-bottom: 1px solid;
       color: var(--b3-protyle-inline-tag-color);
       transition: var(--b3-transition);
+      cursor: pointer;  // 预览导出无此元素，只读和编辑状态都需要点击 https://github.com/siyuan-note/siyuan/issues/11854
     }
 
     span[data-type~="a"] {
@@ -601,7 +602,6 @@
 // 导出 html 不需要编辑样式
 .protyle-wysiwyg[data-readonly="false"] {
   span[data-type~="inline-math"],
-  span[data-type~="tag"],
   .protyle-action__language,
   .render-node {
     cursor: pointer;
diff --git a/app/src/menus/protyle.ts b/app/src/menus/protyle.ts
index cc23bba52d..eb6c853ad3 100644
--- a/app/src/menus/protyle.ts
+++ b/app/src/menus/protyle.ts
@@ -712,7 +712,7 @@ export const contentMenu = (protyle: IProtyle, nodeElement: Element) => {
             if (inlineTypes.includes("code") || inlineTypes.includes("kbd")) {
                 window.siyuan.menus.menu.append(new MenuItem({
                     label: window.siyuan.languages.copy,
-                    icon:"iconCopy",
+                    icon: "iconCopy",
                     click() {
                         writeText(protyle.lute.BlockDOM2StdMd(inlineElement.outerHTML));
                     }
@@ -2092,7 +2092,7 @@ export const tableMenu = (protyle: IProtyle, nodeElement: Element, cellElement:
     return {menus, removeMenus, insertMenus, otherMenus, other2Menus};
 };
 
-export const setFold = (protyle: IProtyle, nodeElement: Element, isOpen?: boolean, isRemove?: boolean) => {
+export const setFold = (protyle: IProtyle, nodeElement: Element, isOpen?: boolean, isRemove?: boolean, addLoading = true) => {
     window.sout.tracker("invoked");
     if (nodeElement.getAttribute("data-type") === "NodeListItem" && nodeElement.childElementCount < 4) {
         // 没有子列表或多个块的列表项不进行折叠
@@ -2139,7 +2139,9 @@ export const setFold = (protyle: IProtyle, nodeElement: Element, isOpen?: boolea
     const id = nodeElement.getAttribute("data-node-id");
     if (nodeElement.getAttribute("data-type") === "NodeHeading") {
         if (hasFold) {
-            nodeElement.insertAdjacentHTML("beforeend", '<div spin="1" style="text-align: center"><img width="24px" height="24px" src="/stage/loading-pure.svg"></div>');
+            if (addLoading) {
+                nodeElement.insertAdjacentHTML("beforeend", '<div spin="1" style="text-align: center"><img width="24px" height="24px" src="/stage/loading-pure.svg"></div>');
+            }
             transaction(protyle, [{
                 action: "unfoldHeading",
                 id,
diff --git a/app/src/protyle/wysiwyg/input.ts b/app/src/protyle/wysiwyg/input.ts
index b9422b707a..3d0fa78449 100644
--- a/app/src/protyle/wysiwyg/input.ts
+++ b/app/src/protyle/wysiwyg/input.ts
@@ -14,6 +14,7 @@ import {hasClosestByAttribute, hasClosestByClassName} from "../util/hasClosest";
 import {fetchPost, fetchSyncPost} from "../../util/fetch";
 import {headingTurnIntoList, turnIntoTaskList} from "./turnIntoList";
 import {updateAVName} from "../render/av/action";
+import {setFold} from "../../menus/protyle";
 
 export const input = async (protyle: IProtyle, blockElement: HTMLElement, range: Range, needRender = true, event?: InputEvent) => {
     if (!blockElement.parentElement) {
@@ -64,7 +65,8 @@ 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();
@@ -156,6 +158,12 @@ export const input = async (protyle: IProtyle, blockElement: HTMLElement, range:
     ) {
         log("SpinBlockDOM", blockElement.outerHTML, "argument", protyle.options.debugger);
         log("SpinBlockDOM", html, "result", protyle.options.debugger);
+        if (blockElement.getAttribute("data-type") === "NodeHeading" && blockElement.getAttribute("fold") === "1" &&
+            tempElement.content.firstElementChild.getAttribute("data-subtype") !== blockElement.dataset.subtype) {
+            setFold(protyle, blockElement, undefined, undefined, false);
+            html = html.replace(' fold="1"', "");
+            protyle.wysiwyg.lastHTMLs[id] = blockElement.outerHTML;
+        }
         let scrollLeft: number;
         if (blockElement.classList.contains("table")) {
             scrollLeft = blockElement.firstElementChild.scrollLeft;
diff --git a/app/src/protyle/wysiwyg/transaction.ts b/app/src/protyle/wysiwyg/transaction.ts
index 3df0301799..3cf2535e25 100644
--- a/app/src/protyle/wysiwyg/transaction.ts
+++ b/app/src/protyle/wysiwyg/transaction.ts
@@ -892,7 +892,7 @@ export const turnsIntoTransaction = (options: {
     selectsElement.forEach((item, index) => {
         if ((options.type === "Blocks2Ps" || options.type === "Blocks2Hs") &&
             item.getAttribute("data-type") === "NodeHeading" && item.getAttribute("fold") === "1") {
-            setFold(options.protyle, item);
+            setFold(options.protyle, item, undefined, undefined, false);
         }
         item.classList.remove("protyle-wysiwyg--select");
         item.removeAttribute("select-start");
@@ -1116,18 +1116,20 @@ export const transaction = (protyle: IProtyle, doOperations: IOperation[], undoO
             protyle.model.headElement.classList.remove("item--unupdate");
         }
         protyle.updated = true;
-
         if (needDebounce) {
             protyle.undo.replace(doOperations, protyle);
         } else {
             protyle.undo.add(doOperations, undoOperations, protyle);
         }
     }
+    window.clearTimeout(transactionsTimeout);
     // 加速折叠 https://github.com/siyuan-note/siyuan/issues/11828
     if (doOperations.length === 1 && (
         doOperations[0].action === "unfoldHeading" ||
         (doOperations[0].action === "setAttrs" && doOperations[0].data.startsWith('{"fold":'))
     )) {
+        // 防止 needDebounce 为 true
+        protyle.transactionTime = time + Constants.TIMEOUT_INPUT * 2;
         fetchPost("/api/transactions", {
             session: protyle.id,
             app: Constants.SIYUAN_APPID,
@@ -1168,7 +1170,6 @@ export const transaction = (protyle: IProtyle, doOperations: IOperation[], undoO
         });
     }
     protyle.transactionTime = time;
-    window.clearTimeout(transactionsTimeout);
     transactionsTimeout = window.setTimeout(() => {
         promiseTransaction();
     }, Constants.TIMEOUT_INPUT * 2);
diff --git a/app/src/search/util.ts b/app/src/search/util.ts
index 017e7a5b3a..0960d8fbc0 100644
--- a/app/src/search/util.ts
+++ b/app/src/search/util.ts
@@ -1444,7 +1444,7 @@ ${getAttr(item)}
         config.method === 0 ? `<div class="b3-list-item b3-list-item--focus" data-type="search-new">
     <svg class="b3-list-item__graphic"><use xlink:href="#iconFile"></use></svg>
     <span class="b3-list-item__text">
-        ${window.siyuan.languages.newFile} <mark>${(element.querySelector("#searchInput") as HTMLInputElement).value}</mark>
+        ${window.siyuan.languages.newFile} <mark>${escapeHtml((element.querySelector("#searchInput") as HTMLInputElement).value)}</mark>
     </span>
     <kbd class="b3-list-item__meta">${window.siyuan.languages.enterNew}</kbd>
 </div>