External links not working if type set to slideshow

The way this plugin works is it looks for a link around a gallery image and replaces the href attribute with a custom url – it doesn’t add links around images that aren’t already linked. Looking at the jetpack’s code for a “slideshow” gallery, it is not putting any kind of link around slide images. Since WP Gallery Custom Links is not finding any link href to match on to swap in a custom value, the custom links cannot be applied to slideshow images.