:bug: fix https://github.com/siyuan-note/siyuan/issues/5417

app/src/protyle/util/setEditMode.ts

@@ -10,8 +10,6 @@ export const setEditMode = (protyle: IProtyle, type: TEditorMode) => {
         protyle.contentElement.classList.add("fn__none");
         protyle.scroll?.element.classList.add("fn__none");
         protyle.breadcrumb.element.classList.add("fn__none");
-        protyle.breadcrumb.element.nextElementSibling.classList.add("fn__flex-1");
-
         protyle.preview.render(protyle);
     } else if (type === "wysiwyg") {
         setPadding(protyle);
@@ -25,8 +23,6 @@ export const setEditMode = (protyle: IProtyle, type: TEditorMode) => {
             protyle.scroll?.element.classList.remove("fn__none");
         }
         protyle.breadcrumb.element.classList.remove("fn__none");
-        protyle.breadcrumb.element.nextElementSibling.classList.remove("fn__flex-1");
-
     }
     hideElements( ["gutter", "toolbar", "select", "hint", "util"], protyle);
 };