2.2.21 [W3C-HTML52] Section 4.10.5.1.5. E-mail state (type=email)

C0039: Punycode in a value is not properly converted to IDN

The specification states:

 4.10.5.1.5 E-mail state (type=email)
     ...
     User agents may transform the values for display and editing.
     User agents should convert punycode in the domain labels of the value to 
     Internationalized Domain Names in the display, and vice versa.

EdgeHTML Mode

Punycode in a value is not properly converted to IDN.