I tried to find the regression for this issue using several methods. It seems that is intermittent. I could only find irelevent regressors. My quess is that the issue is reproducing since the browser.search.serpEventTelemetry.enabled pref was introduced.
Bug 1842866 Comment 2 Edit History
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I tried to find the regression for this issue using several methods. It seems that is intermittent. I could only find irelevent regressors. My quess is that the issue is reproducing since the browser.search.serpEventTelemetry.enabled pref was introduced because the bug is reproducing on Nightly from 2023-03-02.