In the Low Quality Posts queue the upvote/downvote icons are displayed but they don't respond to clicks. It has been pointed out in comments that it is by-design that we cannot vote in this queue, but the behaviour of these buttons is not consistent with the rest of the site.
I'd expect either for:
- the icons to not be there (as in Close/Reopen Votes)
- clicking the icons to show an error message (like when voting on your own post)
@TravisJ pointed out that these icons do show you if you have voted on the post previously. If this is the reason for their visibility then I suggest just adding some sort of error that informs the user that voting is disabled. A better message might be "Voting is disabled in this queue":