Loading div not going away if there is an empty div

[chrispink]

This seems to be related to issues marked as resolved in 2015. I think it has crept back in in a recent update.

My slider has been working... and then it stopped with the loading div not going away and the sliding not occurring - although static slides were visible under the loading div once hidden.

I found the 2015 issue and played with the content of the enclosed divs in the slides. It is not clear (working site, need for quick fix) but making sure that no enclosed div was without content (at its crudest adding string literal "foobar") made the issue go away.