UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.143 Safari/537.36

Example URL:
https://jsfiddle.net/eao41fyc/3/

Steps to reproduce the problem:
1. Open the JsFiddle https://jsfiddle.net/eao41fyc/3/
2. Top button should stop the tone but does not.
3. Bottom button correctly stops the tone.

What is the expected behavior?
Sound should stop when doing setValueAtTime(0, 0) but does not. I've copied the relevant part of the Web Audio API documentation in the JsFiddle, and below:

The time at which the exponential approach will begin, in the same time coordinate system as the AudioContext's currentTime attribute. A TypeError exception must be thrown if start is negative or is not a finite number. If startTime is less than currentTime, it is clamped to currentTime.

What went wrong?
0 should become equal to context.currentTime under the hood but that apparently does not happen. Doing it explicitly with setValue(0, context.currentTime) makes it work. This used to work before the most recent Chrome update.

Did this work before? Yes Chrome 52.

Is it a problem with Flash or HTML5? HTML5

Does this work in other browsers? Yes 

Chrome version: 53.0.2785.143  Channel: stable
OS Version: OS X 10.11.1
Flash Version: Shockwave Flash 23.0 r0