Here is my code snippet how I am including the favicon in my personal website which was built with Angular JS.
<link rel="shortcut icon" type="image/x-icon" href="/img/favicon.ico"/>
With this code, the favicon is appearing on Chrome and IE browsers. But the favicon is not appearing for Angular JS templates on Firefox browser.
I looked at the similar websites made with Angular JS, the same issue is repeated.
Please refer the following website,
https://www.madewithangular.com/#/
Thanks.