{recently-updated} macro should display comments whit labels to

When i'm using the syntax

{recently-updated:spaces=DESIGNER|labels=label1,label2|types=page,comment|max=5|theme=sidebar}

,the comments are not shown on the list.

It's clear to me that comments do not have labels, but it would be great, if the comments were included in the filtered list, having this way a complete overview of recently updated items.