I can't edit my posts when I press Go Advanced, and my signature isn't showing up in my posts, either, despite having Show Your Signature turned on in all my posts. I'm also getting a message, despite clicking post once when using Quick reply saying, "This is a duplicate post" and whanot. What's going on? That's a lot of glitches at once.
I can't show my signature at all in any forum style, in both the old and new ui, btw. But, "Go Advanced" only seems to be happening in the older forum style. I don't know. It's still really annoying needing to to go straight to the full editor when I want to edit my post and try to get my signature to show up (which it won't, no matter what I try).