Special:Badtitle/NS90:Forum:Tech Wishlist And Bug Reports/'ATT templates'/reply (2)

It's a bizarre quirk of the forum namespace that is the reason for this.

Also, Wikia has a quote button extension I'd love to port here, but they use an extremely customized MediaWiki build that would make porting a massive pain even though they have open sourced it. I'd love to add a spoiler button for similar reasons myself.