UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36

Example URL:
https://bugs.chromium.org/p/chromium/issues/detail?id=849115

Steps to reproduce the problem:
See https://bugs.chromium.org/p/chromium/issues/detail?id=849115.

What is the expected behavior?
See https://bugs.chromium.org/p/chromium/issues/detail?id=849115.

What went wrong?
The bug occured again after it was labelled as "fixed".

Did this work before? Yes 

Is it a problem with Flash or HTML5? HTML5

Does this work in other browsers? Yes

Chrome version: 67.0.3396.87  Channel: stable
OS Version: 10.0
Flash Version: 

Contents of chrome://gpu: 

https://bugs.chromium.org/p/chromium/issues/detail?id=849115 was fixed but started to occur again in 67.0.3396.87.