Issue with punycode for email fields

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When user trying to insert email with cyrillic symbols we can get weird behaviour with dynamic punycode encoding

Expected behavior

Input w/o changes and error on save

Actual/Current behavior

Cursor position change and xn--

Steps to reproduce the actual/current behavior

• Enable cyrillic keyboard in your system
• Create user with email [email protected] and save it
• Reload page and move cursor to the end of email and type ю
• [email protected] will be changed to [email protected] and curser appears at the first symbol of email

Environment

Used latest Keystone demo with new 4.1.0 release

Software	Version
Keystone	4.1.0
Node.js	10.15.0
Browser	Chrome 76.0.3809.0