On Friday 12th of November 2021, Google was bidding 2 to 3 times higher on shopping ads.
The Google Ads system encountered an unexpected issue between 6pm PST on Friday Nov 12 – 3am PST Saturday, Nov 13 that affected Shopping Ads. We identified and fixed the issue. Everything is working as expected now.
— Google Ads (@GoogleAds) November 13, 2021
The algorithm bug was resolved on the 13th Saturday, November 2021.
If you have encountered unusual high bids, contact Google Ads support to ask for a refund.
According to Ads Liason, Google will contact you with more details. The AdsLiason handle is the official Twitter handle for two employees that communicate with Google internally to outsiders. So the info provided is verified.
Impacted advertisers will be notified with more details.
— AdsLiaison (@adsliaison) November 13, 2021
Update: Google Ads has now officially added the info in your Google Ads account.