Signature not getting attached with iPhone posts?

Anyone else notice that their signatures are not getting attached to posts made on their iPhones in Safari? I've just noticed this recently when I switch to desktop view of Macrumors to check something in a post. It's not a big deal, but I have a list of my devices and their specs which are occasionally relevant to what I'm posting.

Interesting. If it doesn't attach to this post, then I can only guess that there's an issue with my phone and the mobile site. I'm on 8.2 if that helps. I've switched to the desktop site to make this post.