Display custom post type taxonomy in a WordPress excerpt for current post

Hi there and thanks in advance for any help. I am trying to display custom taxonomies(Themes and Guests)on the current post (of custom post type, Podcasts). I have tried the code below, but I am getting an empty result ie. nothing is showing. I added $post->ID after I realised that the code was working fine, but was displaying ALL categories, not just the ones for the current post.

Why are custom taxonomies only appearing on the edit page of one of these types, but not the other?

So here’s an odd one. I have custom taxonomies that show on the admin menu of both post types they’re associated with, but only one of the post types shows them in its edit menu. (Over on the side of the post edit screen, where it says Categories, Tags, Featured Image.)