The limitation where links in choice labels don't function in the Survey123 web app is documented for certain situations. Does this also apply to the image question type?
I'm using a concat() to construct a mailto link for the hint of an image question. This link works in Connect and the field app, but not the web app.
concat('<a href="mailto:mail@business.com','?subject=Additional Evidence: ',${UUID},'&body=Please attach additional photos here and send. Do not alter the subject line." target="_blank" rel="noopener noreferrer">mail@business.com</a>')
Table for concat() link example