If a user asks a follow-up question within AI Mode, they are essentially performing a new query. All impression, position, and click data in the new response are counted as coming from this new user query.
It seems the Google Search Console performance report for Google Discover has reported zero impressions and clicks starting Thursday, June 5th, indicating a significant reporting bug affecting many publishers.
The bug in Google Search Console's Discover performance report displayed a blue notice prompt with a mysterious hashtag and options 'Learn more' and 'Got it.' This issue arose unexpectedly.
If you have a national domain .pl (we checked .com and .net - the error doesn't occur there), create a subdomain with a name consisting of EXACTLY 5 characters (e.g., test1.jakubsawa.pl), add it to GSC (either as a property or domain), and add a link to sitemap.xml. GSC WON'T FETCH IT!