Form name not reflected in the Editor

I have x3 forms on my site, named using the ‘Form Name’ field in the Designer. Two out of three of the forms appear in the Editor with the same name as set in the Designer but one of them refuses to change. I’m flummoxed as to why - I’ve set it as ‘Request a call-back’ in the Designer but its appearing as ‘Email Form’ in the Editor. Any ideas please?

The pesky form is used in a Symbol if that makes any difference.

Here is my site Read-Only:
(how to share your site Read-Only link)