Hi Alex,

Instead of using the button fields in each slide you can add the button shortcode, with icon attribute, to the slide content textarea (see attached screenshot):

[button href="yourdomain.com" icon="fa-angle-right"] Text [/button]

This will be possible by using some custom CSS. Please add the following line to Appearance -> Customize - > Additional CSS:

.btn i { float: right; margin: 2px 0 0 10px; }