This comes up in the review pane for Review Low Quality Posts:
https://stackoverflow.com/review/low-quality-posts/71833
This is really a "piss poor" answer (quote from the answer) to a not very good question. From the options "Looks Good", "Delete", and "Not Sure", I obviously chose "Delete". But that didn't work, because the question is locked.
Should I then press "Looks Good" instead?
I suggest we filter out posts that cannot be acted upon.
Today, when reviewing some of our favorite cartoons I notice that the "Edit" button is not present on answers to locked questions, but the "Delete" button is. So there obviously is some kind of detection.
Could this perhaps be extended to control the "Delete" button as well? Or to not show these answers at all?