I had the same problem and I believe the problem started with the Chrome 49.0.2623.87. I hope it is going to be fixed in the coming updates. For now, I am using the script below, which can be found here.
var favIcon = "favicon.ico";
var docHead = document.getElementsByTagName('head')[0];
var newLink = document.createElement('link');
newLink.rel="shortcut icon";
newLink.href="data:image/png;base64,"+favIcon;
docHead.appendChild(newLink);
It will not stop the favicon requests, so for a short period of time you still will see the default favicon from chrome, but I believe there is not much to be done about that.