UserAgent: ’\_(ツ)_/‘

Example URL:
All urls

Steps to reproduce the problem:
1. Mute the tab
2. Open a webpage (in that tab) which plays sound (for example a youtube video)
3. Press CTRL+W (to close the tab)
4. Notice that sound is played for about ~100 milliseconds

What is the expected behavior?
No sound should be played at all.

What went wrong?
I don't know why, but sound is played for a very short time before the tab is closed. But, a muted tab should not play sound at all. Probably Chrome is unmuting tab before closing it, I don't have other explanation.

Did this work before? No 

Is it a problem with Flash or HTML5? HTML5

Does this work in other browsers? Yes

Chrome version: 61.0.3163.100  Channel: stable
OS Version: 6.3
Flash Version: Flash? What is it? Is it some cake?

Contents of chrome://gpu: 
"Please open a new tab on URL chrome://gpu and paste that text here." ---> No need for it, because the problem is not related just to my system, it is related to Chrome. I tested it on Windows and on Linux and on different architectures and the issue is still present.

Any other comments?
No.