See bug 1702416, comment 18. There seem to be (rare) cases, where the same event arrives twice in the DB (one before and one after browser restart). We should recognize those and collapse them to just one.
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See bug 1702416, comment 18. There seem to be (rare) cases, where the same event arrives twice in the telemetry DB (one before and one after browser restart). We should recognize those and collapse them to just one.