Latest Update Broke Use of Font Awesome Styling

In prior versions of the plugin we used Font Awesome styling to utilize lighter weight versions of their icons. In the latest update, that code does not render properly on the front end. The icon selection doesn’t appear to utilize other weights or premium Font Awesome icons which we have paid to access. Any thoughts?

<i class="fa-thin fa-crosshairs fa-lg" style="color: #1c2537"></i>