Upvoting old posts; what happens? Edit: already answered by Pfunk.

I just noticed the interface allows the upvoting of posts well over 7 days old.

I don't know what happens with these votes, as there is no second payout period anymore. The voting symbol button does turn blue, but the number of votes isn't incremented.

If nothing is done with these votes, shouldn't the interface prevent their casting? Or is this working as intended?