I had a minor hickup today when I posted a comment on one of the AUR packages and after a bit deleted my comment and once the page refreshed noticed that in the meantime someone had commented on my post.

It would be nice to have a periodic lazy reload of comment threads on packages or at least a token header when sending DELETE requests to check for these kinds of issues. If the token matches the thread cache, delete the message, otherwise reload the page without deleting. (Haven't checked if the delete request is sent via XHR requests but in that case we can just tell the user to reload the page).