XF 2.3 Forum icons disappeared upon upgrading to 2.3

[trman]

After upgrading from 2.2 to 2.3 the forum icons disappeared. I was using the default icons that appeared to the left of the forum name. How do I bring these back?

 

[Old Nick]

That was custom icons i guess, or a custom style?
FontAwesome icons syntax has changed in XF 2.3:

XF 2.3 Post in thread 'Boosting performance in XenForo 2.3'

Sep 26, 2023

Font Awesome improvements​

On almost every page we serve currently, we include as many as five different variants of the Font Awesome 5 Pro icon library. That's up to 8,000 icons split across their different variations, but on any given page we actually use... a lot less than that. The file size of each of these fonts is up to 200KB with an additional 40KB worth of CSS.

We have always wanted to ship a much smaller subset of icons but when admins, style designers and add-on developers have the full suite of icons available to them, this can be a challenge. In particular, working with...

• Chris D

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[trman]

It was not a custom style, I did change the colors but did not did not upload a new style. I was using the default icon set.

 

[trman]

Also when I switch back to the default style the forum icons are not present there either. I have made no changes to the default style