Please check the tags pointed with red arrow. Tags pointed with green arrow are perfect. There is some issues with padding. Please take a look on tags pointed with Red arrow.
Mountain lion, Chrome 21.0.1180.82
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As Sathya mentioned in the comments, there's already a fix in for this issue, but it seems to only be applied to the "Favorite Tags" portion (as you noticed).
I'm not sure if I made a mistake when I suggested the fix previously or if that module's ID has since changed, but the problem should go away either way if the CSS declaration for
#interestingTags .post-tag:after is changed to