I have a table in which I'd like to have a column showing a custom field with the field type "Date". But all it does in the table is show a string of numbers. Please see attached screenshot.
Is there a similar example that we can see? hidden link
What is the link to your site? hidden link
The shortcode for the table you see in hidden link looks like this:
[posts_table post_type="veranstaltung" columns="image:Bild,title:Veranstaltung,cf:wpcf-subheading:Typ,excerpt:Beschreibung,cf:wpcf-date:Datum" format="j. F Y" excerpt_length="20" widths="auto,150px,auto,auto,130px"]
Based on what i'm seeing here you're receiving the post data using the shortcode [posts_table] unfortunately it doesn't appear that this shortcode can format the date into a human readable format.
You may need to contact the developers of this shortcode for them to provide a solution for this given that you're using their shortcode.