This question already has an answer here:
we have countered a seriously weird problem. 3 of our very most popular search results went invisible. This means, that they still show avg. position, they still get impressions. But they don't get clicks / traffic.
Its been 5 days since it happened. There is no messages in regards to those pages or manual actions (delay of up to 3 days). Absolutely everything is green. And the live testing tool is green as well. There has been no DMCAS (dmca has delay of 2-4 days).
With all the years we have been doing business, we have encountered all possible situations with google. But this is something unique. The results are simply put invisible and other content from our site wont pop up, as it gets labeled as "irrelevant" as the main URL is there (but invisible.)
Is there some sort of a algorithm that detects X anomyalies and makes specific results into invisible until manual review by a googler?