Blog Post Block + CPT without selecting Taxonomy

Hi!
I’m currently working on a client site where we are using
add_theme_support('add_avia_builder_post_type_option');
to select a custom post type when using the ALB “Blog Post” block to select a custom post type to be shown.

The problem we are encountering is, that we simply want to show all posts of that post type no matter what taxonomies they have. To reflect that we did not select a taxonomy entry (i.e. a tag or a category) in the Blog Post Block settings “Which Entries?”.
But now posts that do not have any categories/tags/etc assigned at will not be listed! Only when I assign a taxonomy (according to what is selected in the Blog Post Block settings dropdown for “Which Entries?”) it is shown.

I investigated a bit and it seems that in the block at enfold/config-templatebuilder/avia-shortcodes/blog/blog.php:315 there will always be categories written to the args even if nothing is selected. This results in only posts with anything assigned to be returned.
If that block is skipped, the posts without taxonomies are shown correctly.

Is this intended behaviour or a bug? And if its fhe former: Is there an official workaround (other than assigning meaningless categories/tags/etc)?