Video embed code box missing

Running the latest SM and SM pro. The “Video embed code” box (not the “Video link” – that is there) is not displayed. Not a big issue, but I have found it useful on occaision to add not only additional embedded videos but HTML text.

Not only is it not present when creating a new sermon, but it cannot be edited for existing sermons, where it has been used.

See for example https://www.standrewsoxshott.org.uk/sermons/rooted-in-god/

Will this be restored, or is there another way to get the same functionality?

Sorry for duplicating my previous post but replies to otherwise resolved posts don’t seem to get attention.