Caption on full size images

I love this plugin, it is BY FAR the single greatest shortcodes plugin for WordPress and I love it!

I can get captions to work on the carousel for single images as they scroll, but on the full resolution image that pops up in the light box when clicking an image, the captions do not show.

Is there a way to get this working?

https://wordpress.org/plugins/shortcodes-ultimate/