Google Ads Testing Showing Same Ad From Same Advertiser On Same Search Results Page
Briefly

"We're conducting a small experiment testing different ad configurations. We don't have anything further to share at this time, and there is no action for advertisers to take."
"This is something that continues to bewilder me, as I have continued to see this for the last two weeks now. Is this a test? A bug? A feature?"
Read at Search Engine Roundtable
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