UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36

Steps to reproduce the problem:
1. Open Chrome
2. Go to second desktop

What is the expected behavior?
Second desktop will contain some other windows

What went wrong?
Second desktop contains the exact same copy of chrome (as if i've opened it in both desktops) 

See: https://streamable.com/ssf1z

Did this work before? Yes Not sure...

Chrome version: 71.0.3578.98  Channel: stable
OS Version: OS X 10.14.1
Flash Version: 

This doesn't happen in Chrome Canary