Hi.
Thanks for letting me know about that.
I ended up setting a default category for all posts of that particular post type as a workaround just so that they show up in the listing (they were not supposed to have taxonomies but well as long as it is added automatically it’s fine).
For anyone stumbling here in the future, instructions for the workaround can be found here: Stackexchange – Setting Default Category for Custom Post Type Upon Autosave