Someone posted a question of questionable quality 10k+ on Stack Overflow, and within a few seconds, a spammy answer Now deleted by three users was posted. I've flagged the answer for spam, and voted to close the question.
Within two minutes, the question was closed and deleted. If I recall correctly, the answer was also deleted automatically. However, after a page refresh, the answer was undeleted again.
I went to my flag history and saw that the SPAM flag was disputed. The user profile of the spammer shows "1 Answer", but there are no answers listed:
Though the activity tab does show the answer:
EDIT: Plot twist! A diamond moderator did undelete the post a minute after posting (https://stackoverflow.com/posts/18959861/revisions). Probably not deliberately, is anything broken?