Google says disabled source taps on Discover AI Summaries were "a bug in a Discover experiment", now turned off
Rajan Patel, VP of Engineering for Search at Google, replied on X at 00:48 UTC on 27th Oct: "this was a bug in a Discover experiment."
He added: "We've turned off the experiment, and the experience works as intended again." He was answering Lily Ray.
The report he answered came from Damien Andell, who tracks Discover. On 23rd Oct he posted that Discover had "started a test on AI summaries", namely "Disabling clicks on sources".
Before the test, he wrote, tapping the sources under an AI summary card "opened a mini-feed with articles from the sources of the AI summary". He named a flag, disable_aio_sources_button_tap.
Search Engine Roundtable reported the sighting on 26th Oct and could not reproduce it. Its post now carries Patel's reply.
Patel's reply does not say what the experiment tested, when it began, or how many users saw it. No market or device is named.
Andell posted again on 27th Oct that the experiment was replaced by another. He knows the new one only by its flag name, and Google has said nothing about it.
The sources row is the path from an AI Summaries card to the sites it cites. Search Engine Journal covered Patel's reply the same day.