Font Awesome Icon not showing depending on the icon.

Webix JS
1

i first thought this was a cache issue but even on the snippet , some icons are not showing on the button

what’s weird is that some shows up and some doesnt

anyone else having this issue?

here is the snippet

http://webix.com/snippet/d332c4e9

2

For now, Webix uses Font Awesome 4.3, while these icons were added in 4.4.

We are going to update the version of Font Awesome in our package, but for now you can include the latest version of icons from the FontAwesome CDN.