This appears to only affect older versions of IE: It's fine in Chrome, Firefox, and IE 9+. Unlike some earlier issues where "!!" would appear in field values on form reset, this occurs when the EJS template is first rendered.
Thanks much, I am also definitely seeing this. I am working on a solution at the moment and should have something in place shortly.
This is fixed with 6b3c813.
That was quick! Just tested locally with a fresh build, and it works perfectly. Thank you.