I wanted to post a link to a comment on our 2015 Moderator Election page, but I can't. Everywhere else, the date/time stamp after the commenter's username is a separate "hotspot" (in the Google Chrome browser under Windows, I just right-click and select Copy link address, so I can paste the link in questions/answers/comments of my own.
I specifically checked this obsolete 2012 Community Moderator Election over on ELU, thinking perhaps there was some "by design" reason why election-related comments might be treated differently. But the links are fine there, so I think my years of unpaid "soak testing" have finally paid off. It may be small, but it's mine own find - and It's a bug!
EDIT: Further to @ColleenV's comment below, upvotes don't work on the comments in the page I linked to either. If this is "by design", I for one fail to see the justification.