Related: Close and delete button spacings are off (fixed)
A trailing space appears after the text "Close (x/5)". The space only appears when there's at least one close vote. Example:
Note the space after the (3/5). I don't believe this appeared 20 minutes ago, which makes me think that the bug was introduced in the most recent deployed build.
The HTML looks like this:
<a id="close-question-nnnnnnn" title="2 more votes are needed to close this question" class="load-tooltip-on-hover">close (3/5)
</a>
The odd spacing is the result of the trailing newline.