Classic Editor not working on Widgets

With the latest version of WordPress and Classic Editor, the widget pages are still appearing in the block editor style. Classic Editor is working through the rest of the dashboard, just not for the widgets. The site is not yet live so I am unable to send you the web address that it is for but happy to provide you with a temp login to the WordPress backend so you can take a look. Cheers.

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