Disappear hstack when editor mode less than lg

apps/app/src/components/PageControls/PageControls.tsx

@@ -284,7 +284,7 @@ const PageControlsSubstance = (props: PageControlsSubstanceProps): JSX.Element =
       )}
 
       { !hideSubControls && (
-        <div className="hstack gap-1">
+        <div className={`hstack gap-1 ${isViewMode && editorMode === EditorMode.View ? '' : 'd-none d-lg-flex'}`}>
           {revisionId != null && _isIPageInfoForOperation && (
             <SubscribeButton
               status={pageInfo.subscriptionStatus}