Overview of the Impressions Bug
Google confirmed a significant logging error in Search Console that has inflated impression counts since May 13, 2025. The company formally acknowledged the issue on April 3, 2026, affecting one of the most relied-upon data sources for SEO professionals and content marketers. This revelation raises questions about data integrity and how practitioners should adapt their strategies moving forward.
The bug primarily impacted the Performance report, which measures organic search visibility. While clicks and other metrics remained unaffected, the inflated impression counts distorted visibility assessments for nearly a year. As Google rolls out fixes, users will see impression numbers decline—marking a recalibration rather than a loss of actual visibility.
Timeline and Detection of the Bug
The error persisted undetected for approximately ten and a half months, only flagged publicly by independent SEO consultant Brodie Clark. He noted unusual spikes in impressions, particularly within the merchant listings search appearance filter. These spikes became particularly pronounced in late March 2026, leading to speculation about their origins.
Before Google’s formal confirmation, Clark’s observations on LinkedIn circulated widely in the SEO community. His findings highlighted illogical increases in impressions for generic queries, such as “product,” that do not typically trigger merchant listing results. This anomaly indicated a deeper issue within the logging mechanism of Search Console.
Scope of the Bug and Unanswered Questions
The logging error specifically affected impression counts in the Performance report; Google’s official scope of the fix does not address potential click attribution anomalies. While the company claims clicks remained accurate, Clark documented discrepancies in how click data attributed to certain queries. This raises concerns about whether click metrics might also contain underlying issues.
As the fix deploys progressively, the visible decline in impressions reflects a recalibration of data rather than an actual drop in visibility. For teams that have benchmarked performance against data from May 2025, this development complicates year-over-year and month-over-month comparisons, potentially skewing insights into organic reach.
Root Causes: Theories Behind the Anomalies
Several theories emerged regarding the possible causes of the inflated impressions. Initially, practitioners suspected rank-tracking tools and SERP scrapers, which have become more difficult to monitor due to Google‘s countermeasures. Technical SEO consultant Razvan Antonescu referenced a scraping incident earlier in February 2026 that may have influenced data integrity.
Another hypothesis linked the spike in impressions to OpenAI’s launch of a product discovery feature in ChatGPT. However, many in the community, including Clark, concluded that scrapers alone could not fully explain the anomalies observed. Some speculated that AI systems capable of visual page reading might be influencing the data, leaning toward a more complex interaction of technologies at play.
Implications for SEO Practitioners
The prolonged duration of this logging error means SEO professionals have operated under the illusion of inflated visibility for nearly a year. Reports indicated spikes of 300-400% in merchant listings impressions, with CTR declining sharply in tandem. This distortion of data complicates performance assessments and necessitates a recalibration of expectations moving forward.
The progressive deployment of fixes means practitioners should be prepared for ongoing adjustments in reported impressions as the new logging behaviors take effect. While clicks remain a clearer signal for performance analysis, the overarching impact of this logging error will likely ripple through SEO strategies for some time. Expect the landscape of metrics to shift as clarity returns to the reporting process, as detailed in recent coverage.
