Continuing the discussion from Broken link to hash_hmac function because @hmz closed the topic:
The problem with the feedback button is that you can use it only once per page. I submitted feedback about an issue, then as I was reading, I found another issue, but could no longer submit feedback. Reloading the page kept showing
Thank you for the feedback. Your comments will help us improve our documents in the future.
Sure, I could hunt for whatever cookies or open the page in incognito mode, but this assumes there can only ever be one wrong thing per page 
