Chrome Version: 57.0.2950.4 (Official Build) dev (64-bit)
OS: Linux

What steps will reproduce the problem?
(1) Go to http://xn--m-4fanol5b8b4f5bcu8cu9qrdqc8wzcufrf0a1d2dta3r1b87a.de/

What is the expected result?
Displays in IDNA encoding in Omnibox:
http://xn--m-4fanol5b8b4f5bcu8cu9qrdqc8wzcufrf0a1d2dta3r1b87a.de/

As per https://www.chromium.org/developers/design-documents/idn-in-google-chrome:
"For example, there is not a single language that contains all characters found in http://şøñđëřżēıċħęŋđőmæîņĭśŧşũþėŗ.de, so this will be shown as punycode. Likewise, http://ebаy.com (with a Cyrillic "а") will always be shown as punycode, even if both English and Russian are in the accepted languages."

What happens instead?
Displays in Unicode:
http://şøñđëřżēıċħęŋđőmæîņĭśŧşũþėŗ.de

I haven't looked at the details, but this is literally the example in our IDNA document and it doesn't do what the document says.