Right!? I checked. Turns out I am the only one left using Safari. It does look fine in Chrome... /shrug. Tried a variety of things. but to no avail. Purely Safari webkit/ MacOS desktop thing. I just found it odd their own browser is not working right for their main developer page. Hopefully they fix it. Versions 26.2 looks fine (outdated mbp). 26.6.1 does not.

No, this is css related.