No, it doesn't help, because my post is referring specifically to Font Awesome 5 (your example is fa = Font Awesome 4). I'm referring to using Font Awesome 5, as with the code below "fab".
Using FA5 is working OK in the browser:
However, in the Moodle App the images are missing:
What I'm trying to understand is whether the Moodle App "CAN" support Font Awesome 5 ?
Can it support the stacking function ?
If it can, how would that be enabled ?
Currently I've used the following code, which works great in browsers, but not the Moodle App:
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.0.13/css/all.css" integrity="sha384-DNOHZ68U8hZfKXOrtjWvjxusGo9WQnrNx2sqG0tfsghAvtVlRW3tvkXWZh58N9jp" crossorigin="anonymous"></script>