wp_list_comments behaves differently when passed string or array

[John_W_B]

1. Set up Discussion so that comment does not require manual approval.
2. Put function in functions.php which prints 'your commment is waiting approval' if

    $comment->comment_approved == '0'.
   

and which prints the comment.

3. call that function in the theme's comment template comments.php

Result: in 6.7.1 if the function is passed as a string, e.g.

wp_list_comments("callback=my_function")

or if it is passed as an array

wp_list_comments(["callback"=>"my_function"])

Behaviour is the same.

Comments are not published unless {{{

$comment->comment_approved == '1'.

}}}

This changed in 6.7.2. Now, if the callback is passed as a string, comments are published even if {{{

$comment->comment_approved == '0'.

}}}

However, now if the callback ias passed an array, comments are not published if {{{

$comment->comment_approved == '0'.

}}}

I cannot see what has caused this change.