true, if the menu is automatically hidden when the navigated page is not represented in the menu by a navigation button; otherwise, false. The default is false.
If the HamburgerMenu.SyncWithActivePage option is enabled, the button selection in the menu is automatically synchronized with the navigated page. If the navigated page is not represented in the Main Menu by a button, the menu can be automatically hidden. To enable this behavior, set the HideMenuWhenActivePageItemNotFound property to true.