I’m upgrading an app from 5.4 to 6.0, and noticed that when using the Flat skin and Font Awesome icons, the icons in the sidebar don’t have any spacing around them.
Before: https://snippet.webix.com/o4hic1je - select Webix 5.4
After: https://snippet.webix.com/2qazatl9 (had to change some icon names, probably because Webix 5.4 used to include an older version of FA?)