Post Tag Conditional Logic Not Working

Hi, I’m trying to run some CSS on only posts with a specific tag, however, when I select Page / Taxonomy Term Page it only lets me pick from 1 tag (the last tag in my list of tags) and I can’t choose from any of the other tags, nor can I just write the tag name I want.

Same for categories and custom tags etc.

Seems to be a bug.

Otherwise, this plugin is brilliant!