Web Experiment script sending impressions for control variants on non-targeted pages

Incident Report for Amplitude

Resolved

This incident has been resolved.
Posted May 07, 2025 - 14:52 PDT

Monitoring

A fix has been implemented and we are monitoring the results.
Posted May 07, 2025 - 12:52 PDT

Identified

Since 2025-05-06 10:00 PT (17:00 UTC) Amplitude Web Experiments have been sending Impression events to Amplitude for the control variant of experiments on pages that are not targeted by the experiment.
Posted May 07, 2025 - 11:03 PDT
This incident affected: Experiment (Web Experiment Script).