I encountered a problem, that it displays only empty square boxes instead of nice (custom font) images from generated Office UI Fabric icons set, since I change the state of the with the web-part to checked-in state.
I have checked in google chrome developer tools,that the style inside icons-likes-inline.css is presented there (including the @font-face element), but it shows the square box(es)! And since I checked out the page and leave the edit mode I can see the icons again... ??
in detail: the css is added through custom Item_DisplayTemplate (I have tried to do it also in paired Control_DisplayTemplate.html)
$includeCSS(this.url, "~sitecollection/Style Library/MyCustomFeature/fabric-icons-likes-inline.css");
(the icons-likes-inline.css is published, also the Item_DisplayTemplate.html is e.g. in published/ or just in checked-in states)
The picture below shows the several screen shots from the chrome developer tools grabbed in time it was ok - and then comparing it in page checked-in state the developer tool produces the exactly the same results in all) ??
(Also didn't work in IE.) Any Idea?