Due to race condition when Importable data call is still awaiting there is a chance <Message_Id>_SITES gets sent twice. https://searchfox.org/mozilla-central/source/browser/components/newtab/content-src/aboutwelcome/components/MultiStageAboutWelcome.jsx#93 This doesn't impact analysis as the pings gets filtered by unique client_ids, however it will be good to fix this by reducing unused pings in Amplitude.
Bug 1681184 Comment 0 Edit History
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Due to race condition when Importable data call is still awaiting there is a chance <Message_Id>_SITES gets sent twice. https://searchfox.org/mozilla-central/source/browser/components/newtab/content-src/aboutwelcome/components/MultiStageAboutWelcome.jsx#93 This doesn't impact analysis as the pings gets filtered by unique client_ids, however it will be good to fix this and reduce unused pings in Amplitude.