Voting to close should only increment the counter next to the close link

Question

I just opened the flag dialog intending to submit a generic mod flag, but I changed my mind about flagging and submitted a close vote instead. I never left the dialog, though; I just selected the "it doesn't belong here" option.

Usually, voting to close causes the text of the close link to change to close (1), but in this case no change was made. However, I am now seeing flag (1):

I suspect that this is an artifact of the logic saying "when a vote to close is cast, increment the counter by the link that opened the dialog," which made perfect sense before the flag dialog was upgraded to its current feature-rich state back in January.

EDIT:
To be clear, this did go through properly as a close vote, and upon reload the page displays

link | edit | close (1) | flag

This bug is merely, in Grace Note's words, "a pre-refresh artifact on the page."

Answer 1

I suspect that this is an artifact of the logic saying "when a vote to close is cast, increment the counter by the link that opened the dialog,

Your suspicion, Watson, could not be closer to the truth.