UserAgent: Mozilla/5.0 (X11; CrOS x86_64 9460.60.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.91 Safari/537.36

Steps to reproduce the problem:
1. install chrome
2. open terminal
3. google-chrome --headless --disable-gpu --repl https://www.chromestatus.com/

What is the expected behavior?
explained here:

https://developers.google.com/web/updates/2017/04/headless-chrome#repl

What went wrong?
giving me an infinite loop where 
{"result":{"type":"undefined"}} 
is echo'd indefinitely... on ubuntu

Did this work before? N/A 

Chrome version: 59.0.3071.91  Channel: n/a
OS Version: 9460.60.0
Flash Version: Shockwave Flash 26.0 r0