I tried to reject an edit which removed two relevant tags from a question with the following custom reason: "removes good tags". It wanted me to type more characters, so I added some spaces.
Apparently the software didn't like this, giving the following error:
Anyway I have two questions:
What sorts of custom reasons set off the error message? Was it the spaces at the end?
Is "Sorry buster" really necessary? Can't we have a more helpful (and less insulting) error message?