Old, invisible spam?

I was randomly browsing, and came across post #12332. Instead of clicking 'edit', I accidentally clicked 'post' and was surprised to see something there where there wasn't on the previous screen.

Gauging from the content, this was spam from before Danbooru temporarily closed its doors to the public; back when there was still a Digg-esque bury system in place for comments. Is the fact that this shows up now simply an artifact? Is there any way to query for these comments anymore and delete them? It would make sense to me, since there is no longer even a way to show them (except apparently replying to the post), they are really only wasting space.

P.S. Firefox doesn't know 'guaging' by default for some reason...

Shinjidude said:
...snip...

Clicking the post button with no body would redirect you to /comment/show/thread_id
I suppose danbooru changed and there is no /comment/ anymore, only /post/ and comments are under the image.
They should just update the post button to do nothing (or warn for empty body?) instead of redirecting.

This bug should be fixed.