Somebody on Arqade just created a [windows8] tag. Unfortunately this isn't consistent the other Windows tag, such as [windows-xp] and [windows-7], so I tried renaming it to [windows-8]. Unfortunately the system picked this up and helpfully pointed out that the [windows8] tag already exists - yes, I know that, that's what I'm trying to fix! Now the only way to fix the inconsistent tagging is to remove the tag then wait 24 hours before it is purged from the system and create the new tag again.
Can the system be a bit smarter about the edge cases? There are a few ways to avoid this - disable this feature for when the tag only has a few questions for one will work. Or just add a "are you really very sure you want to do this?" button somewhere where I can click.