Open 2nd level sub-menu items to right not left

Since the navigation menus have been updated, the 2nd level sub navigation items open to the left of the 1st level options list rather than to the right. This is true on the website I manage: https://www.littletonsc.co.uk/ and on the Poseidon preview site: https://preview.themezee.com/poseidon/. This means that on smaller screens, the 2nd level options for my 2nd menu item (About us) are disappearing off screen. Also doesn’t match user expectation as arrow that indicates there are sub-options points the right.

Is there a way to adjust the menu so that the options flyout to the right instead of the left?

Thanks

The page I need help with: [log in to see the link]