UserAgent: Mozilla/5.0 (X11; CrOS armv7l 10643.0.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3417.0 Safari/537.36
Platform: 10643.0.0 (Official Build) dev-channel veyron_minnie

Example URL:
udemy.com

Steps to reproduce the problem:
1. open Udemy
2. Play a video
3. 

What is the expected behavior?
just play video in smooth 

What went wrong?
The screen goes black, blinks for a while, when I launch the udemy app from playstore, it completely blacks out and I have to force shut my chromebook

Did this work before? Yes 

Chrome version: 68.0.3417.0  Channel: dev
OS Version: 10643.0.0
Flash Version: