BB Bar Page Title is different from actual Page Title & Page Won't Update

Hi!

Recently, one page on my site has an odd behaviour. It seems there is cross-over interference between a page using a Beaver Builder and a post that doesn’t. The Beaver Builder bar at the top of the page shows the title of a completely unrelated post. When I try ‘Preview Layout’, I get a preview of that post rather than the page displayed in Beaver Builder. That post shows an odd " /> at the top of the page now. If I edit the page, the edits are not saved and published to that page. I am happy to give more information if it will help.

Thanks,

Gareth.