UserAgent: Mozilla/5.0 (X11; CrOS x86_64 11151.59.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.94 Safari/537.36
Platform: youtube

Steps to reproduce the problem:
1. 
2. 
3. 

What is the expected behavior?
good

What went wrong?
block

Did this work before? No 

Chrome version: 71.0.3578.94  Channel: n/a
OS Version: 11151.59.0
Flash Version: blocked