Bug or feature? Comments can't be deleted if post is already gone

So from Rexxit / Sqabblr habit I now tend to delete my own posts and comments after a while, a month or two, to prevent a large backlog in case I feel the need to migrate once again.

It seems you can't delete comments if the post you commented on is already deleted / removed? I get an error message trying to delete some comments, and clicking on that post returns a message that the post isn't available anymore.