Apologies, not really a bug as such, but feedback.
I’ve been testing a discourse forum with Bing and Google’s webmaster tools prior to go live, and Bing reports the following:
The <h1> tag is missing.
For all pages, seems the h2 tag for most pages should be h1? (at least, looking at the source html that is served for the bots).
Also, I noticed that you see:
On every page, not sure what I think of this link being added:)