We had interesting problem where the front page of a site in our multisite couldn’t load in the editing interface. The root cause was that the page had too many revisions and PHP ran out of memory. The presentation was a little unusual–no rich text editors displayed on the page. We used trepmal’s wp revisions WP-CLI plugin to resolve the immediate issue.
The problem
Our main multisite is built on Advanced Custom Fields with the Classic Editor. The individual site in question dates to 2016, and had over 400 revisions when we started having problems with it. We attach the rich text editor to the content areas toward the end of the rendering process. The reported issue (that we verified) is that the rich-text editors weren’t rendering on the visual pane and that the text pane wasn’t loading at all. The text was still in the textarea and selectable, although not visible (white on white).