I'm using Unite Revolution Slider 2 ver. 4.6 b1 with a Joomla 3.7.2 site. Sometimes only certain slides are showing while the rest are not visible (all are published). I can see the divs and images of the missing ones in the html code, but it seems that the javascript doesn't render the slides correctly. Is there any known bug in that version? Should I use the new version?

Thanks in advance.