Hey Amy,
There are Javascript resources on the page which interact with model data, however none that interact with the popup in any way. It’s just a simple out-of-the-box popup with a field editor containing a single field inside it. Nothing non-standard, so I can’t think what could cause this.
Another thing that’s worth mentioning: the error is intermittent across users/machines. So, while my colleague could reproduce the error, I cannot.
Any ideas for what I could investigate?
Thanks!