http://snag.gy/x6InM.jpg author is not rendered as link and not bold, thus looks like if it was a part of message minor: is the left margin on preview intentional?
Lazowik: We recently added author name to the post preview to fix bug 69257. I'm not seeing a blue bold username on this preview either, even though I think the code is in the template. Your second point is bug 69715, we fixed it.