UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36

Example URL:
https://app.apogeeiq.com

Steps to reproduce the problem:
1. While on a Windows laptop connected to an external monitor, log into site, pull up a screen using a Kendo grid.
2. Click edit on a record to trigger a modal pop-up.
3. A white/flickering box appears behind the modal, obscuring the main page of the application.

What is the expected behavior?
I do not expect to see the flickering box. I do not see it when I'm on my laptop--only on the external monitor display. I found the issue in the Google help forum: 

https://productforums.google.com/forum/#!topic/chrome/hwNf_zWzoOI

What went wrong?
I see the flickering box in the application when I'm connected to an external monitor.

Does it occur on multiple sites: N/A

Is it a problem with a plugin? N/A 

Did this work before? Yes 

Does this work in other browsers? Yes

Chrome version: 61.0.3163.100  Channel: n/a
OS Version: 10
Flash Version: 

This started happening about 2 weeks ago.