Hi
The ribbon looses the File menu while resizing.
Check the 3 states in the included image to see what the problem is.
The ribbon is as follow
<ej-ribbon id="defaultRibbon" width="100%" is-responsive="true" allow-resizing="true" client-side-on-toggle-button-click="onRiboonresize" client-side-on-tab-click="onRibbonTabClickResize">
<e-application-tab type=Menu menu-item-id="ribbonmenu">
<e-menu-settings open-on-click="false"> </e-menu-settings>
</e-application-tab>
Thank you in advance for the help
George