Check. It. Out.
Open Source has a blog. Or do they? I've already found it slightly unusual that Open Source even has a blog. No announcements, so I was skeptical. But as curious and adventurous I am, I go and look.
What? Stack Overflow? Ew! I wanted Open Source! Open Source doesn't have its own blog? Outrageous!
Getting serious now, this seems to appear for all sites, whether or not they have community blogs. If the site does actually have a community blog in practice, then it works fine, I can get to that community blog.
Why is this a bug?
That's a good question. Is that link even supposed to be there?
If it isn't, then great. Of course, there's always the chance that this red tag will appear...
Well, then I urge you to reconsider. The fact that there is a link to a "blog" that isn't even run by the site is ridiculously misleading. Not only that, but now that Stack Exchange is now Stack Overflow, it can confuse users: Have I gone to a blog that is run by the Stack Overflow site instead?
To make things worse, SE doesn't even allow community blogs anymore. Unless of course, a site already has one, there's no way that new sites are going to ever have a blog, reducing the need for that link. Thanks Catija for pointing that out!