Change CPT Edit Target Link for Admin List

Issue-1:

edit_post_link() is a template function, to be used in theme template files. It’s not used in the Admin pages. So you’ll not get the edit_post_link filter hook for the Admin list pages.

Issue-2:

get_edit_post_link() function however, is used in Admin list pages. So you’ll get the get_edit_post_link filter hook for the Admin list pages.

Issue-3:

Even though you’ll get the get_edit_post_link filter hook for the Admin list pages, it is used mainly for the link itself, not the entire <a> tag. So you can’t change <a href="Edit-link"> to <a href="Edit-link" target="_blank">. WordPress core doesn’t allow that.

Check the core CODE here, it doesn’t allow target="_blank":

printf(
    '<a class="row-title" href="%s" aria-label="%s">%s%s</a>',
    get_edit_post_link( $post->ID ),
    /* translators: %s: Post title. */
    esc_attr( sprintf( __( '&#8220;%s&#8221; (Edit)' ), $title ) ),
    $pad,
    $title
);

Possible solution:

You can still alter this behaviour by hooking into wp_list_table_class_name filter hook and extend the WP_Posts_List_Table class with something like WP_Custom_Posts_List_Table to override the column_title() function to achieve target="_blank" for your specific custom post type.

It’s probably a lot of work only for opening a link in a new tab, but I don’t see any other proper alternative implementation. Easier JavaScript implementation is possible, but that’s more of a hacky solution.