We have released an upgrade of our Core add-on which provides support for Font Awesome icons up to FA 5.10.1 (more than hundred of new icons supported).
XF\CssRenderException: Error rendering template public:node_list.less: Expected ')' got ';' in public:node_list.less (on or near line 4605) src/XF/CssRenderException.php:87
Icon does not show in some styles for first level categories
Incorrect icon display with [TH] Nodes (unwanted line return)
Selection of icons is complicated if huge images are used