Shortcode Box Appears at the Top of the Editor

Hi there,

Got a strange one this morning.

When i edit a page i get a short-code box at the top then the main page editor beneath.

This is causing issues for my clients.

Links to screenshots below. Any more info would be greatly appreciated.

https://jyles.co.uk/glamorganshire-golf-club/wp-content/uploads/2020/04/screencapture-jyles-co-uk-glamorganshire-golf-club-wp-admin-post-php-2020-04-14-10_05_56.png
https://jyles.co.uk/glamorganshire-golf-club/wp-content/uploads/2020/04/screencapture-jyles-co-uk-glamorganshire-golf-club-wp-admin-post-php-2020-04-14-10_06_10.png

(I have also tried disabling all plugins but it still happens)

Thanks,

Jyles