How to reproduce it :

• add the plugin font-awesome into the ivy :

  <dependency org="fontawesome" name="fontawesome" rev="5.8.2" conf="runtime->default"/>

• add the font awesome font of the plugin into the conf of the skin : skins\mySkin\conf\fonts.xml

  <file>plugins/fontawesome/resources/css/ametys-solid.css</file>

• resolve and launch the CMS
• go to the link directory tool, add a link and select a font awesome glyph

> the font is not imported because from the \conf\fonts.xml of the skin we only can import fonts from the skin.