Chrome Version       : 64.0.3282.140
OS Version: OS X 10.13.3
URLs (if applicable) :
Other browsers tested:
  Add OK or FAIL after other browsers where you have tested this issue:
     Safari: OK

What steps will reproduce the problem?
1. have chrome open in two spaces
2. start a reload/refreshin chrome of some page that takes at least a few seconds.
3. switch to other space, wait for that reload to finish
4. *bazinga* you are force-switched to the space containing chrome window that is excited to have something new to show you. COnfusing, that window isn't necessarily raised or in focus.

It's not super easy to reproduce because you're probably having your spaces focus stolen by various background updates at the same time.

What is the expected result?

Loads of new content keep to themselves and don't interrupt me. 

What happens instead of that?

I get force-switched to another space, losing my context and spray random keystrokes across an unanticipated window.

Please provide any additional information below. Attach a screenshot if
possible.

This bug is incredibly distracting and appears to have just statred happening with either my High Sierra update or with the latest chrome build. 

UserAgentString: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.140 Safari/537.36