I apologize for the late reply as we were on weekly holiday.
fa-rotate-90 is working in JD Newyork template but unfortunately, it's not working on rt-slider section.
Please give some time to solve the problem. Why fa-rotate-90 is not working on rt-slider section. www.screencast.com/t/j9xc6AgZGB
If you like our support and products, tweet us at joomdev and let the world know about it.
JoomDev is not affiliated with or endorsed by Open Source Matters or the Joomla! Project. The Joomla! logo is used under a limited license granted by Open Source Matters the trademark holder in the United States and other countries.