Some icons are broken on Firefox

[Simanas]

Feels like I have searched entire interned, but nothing really solves my problem. Some of font-awesome icons are broken on Firefox (40.0) on my current project like this:

While on google chrome they are all fine:

I am on Linux Mint 17 Qiana OS.

[tagliala]

Please check that your application is not loading multiple version of fontawesome

https://github.com/FortAwesome/Font-Awesome/wiki/Troubleshooting

Ref #1546

Leaving this open, let me know

[Simanas]

No, that's not the case. Cleared Firefox cache a few times. Removed my font awesome tag. All icons disappears, added the same link back, icons are back, but some are broken on Firefox.

[tagliala]

could you please provide a link to your website or create a fiddle showing the issue?

You can start with this one: https://jsfiddle.net/tagliala/syduuue9/

[Simanas]

Sorry can't give you a link. It's a closed system.

Obviously looks there is some problem with my code as icons renders fine on jsfiddle and on fonts-awesome home page... Hmmm... Please leave this open, I will figure this out one way or an other and post here what was wrong in my case.

[Simanas]

I ended up serving font-awesome from CDN. I guess I should do more work with MIMES or CORS on my end to make it work from my server.