The full content of feedback posts is displayed on Special:Log/articlefeedbackv5 (except for a few very long posts).
However, hiding a post in ArticleFeedback does not hide anything in this log. So if log entries are not hidden separately, hidden comments remain publicly visible (example: https://fr.wikipedia.org/w/index.php?title=Sp%C3%A9cial%3AJournal&type=articlefeedbackv5&offset=20130702191400&limit=3&uselang=en)
I think that the summary of the action "submitted feedback post..." should be hidden from this log when the post itself is hidden.
Version: unspecified
Severity: normal