Nov 22
3
Google has posted a short note in the Search Consoles data anomalies that says there was a bug in Google Search that affected some search features, including but not limited to the Top Stories search feature. Google said this started to be noticeable around October 18th and 19th and a fix was pushed out on October 28th that will take a week to fully rollout.
The rest is here:
Google Search Features Bug Impacted Top Stories & Other Features On October 18th & 19th