Custom Icons not working with version > 4.0.6

Hello, long time user of the plugin!

I see some other support topics that are similar to this, so hoping it’s related, but our issue is slightly different than anything else I’ve read about. We have some custom icons that we pull in from the Kit, that stopped rendering when we upgraded beyond 4.0.6.

The previously outputted HTML that works looks like this:

After the update, the outputted HTML that is now broken looks like this:

If I remove the “fa-classic” and replace “fa-fak” with “fak” so that the HTML looks the same as it used to, everything works again. Obviously this is not a full-time solution, so for now we’ve rolled things back to 4.0.6 but would very much like to keep things up to date.

Let me know if you need any other info from my end!