Page Revisions

Hi,

We’ve just launched a client site and they’re noticed that revisions are missing for pages. The option to show them in “screen options” is missing. It is there and working for posts and other custom post types, but not pages.

I’ve tried disabling the very few plugins we have installed, and commenting out all our bespoke code that has anything to do with the pages post type, and still no luck.

WP_POST_REVISIONS is set to true in wp-config.php

Really confused as to what else it could be?

Thanks.