Simple line icons and fontello conflict on Kleo theme

Hello antongorodezkiy, When the PDF Light Viewer plugin is activated, some of my menu icons change to a white box. I am using the kleo theme which uses fontello by default. Viewing the inspect element console on chrome shows that the menus icons that disappear are pointing to simple line icons in your plugin path assets/bower_components/simple-line-icons/css/simple-line-icons.css. Any ideas for a fix? Regards