I'm still getting flack about this downvote I made.
I downvoted an answer and added a comment explaining my reason. I was later convinced by other comments that it was not a good reason for downvoting. Upon attempting to retract my vote, I inadvertently locked it in.
The hover-text still (over a year later) says I can "click again to undo". But it's a big fat lie.
My specific problem has been resolved. But, I have stumbled across other questions where users have done this. In keeping with the push to help new users not to discover rules after having broken them, I think this text needs to be a little more aware, a little more accurate.