Sometimes Google may remove a featured snippet from showing in the search results because it doesn’t comply with its own internal policies or guidelines. Google currently does not notify webmasters when such a removal happens but Danny Sullivan from Google said the company is considering doing so.
Danny Sullivan said on Twitter “We don’t [notify webmasters of featured snippet removals] as it’s not a manual action against the page itself.” “It is something we’re considering, though,” he added. He also said “There may be other ways to show eligibility for particular features.”
Here are the tweets so you can see the context:
Google’s internal policies say they do remove featured snippets manually. Here is what Google says:
I think a notification would be nice to have, so at least you can take steps to do better and regain the featured snippet?
Forum discussion at Twitter.