[Plugin: Rich Text Tags] Lightbox Image Plugins Don't Work

I’m trying to use images in my tag descriptions which use a Lightbox plugin to bring up the larger/original version of images posted into the description. I’ve tried activating different Lightbox plugins, each work when I insert images into posts, but not in tag descriptions. When clicking on an image, it just takes you to a new page with just the image, as if the plugin isn’t turned on.