Last modified: 2012-08-12 14:04:01 UTC
Per https://en.wikipedia.org/w/index.php?title=Wikipedia:Village_pump_%28technical%29&oldid=471486583#Article_Feedback_tool_is_displayed_when_prompted_to_confirm_a_purge (Hazard-SJ): "The Article Feedback tool is displayed when prompted to confirm a purge. I believe this is a bad idea, and furthermore, a minor bug that should be fixed, so it only is shown when a user is viewing the page itself." Does seem like a fairly easy think to fix. Presumably AF filters per action, though, so I can't help wondering why it displays on action=purge anyway.
Seems to have been fixed in AFTv5.