can't create tab groups

[salesforcefiref]

i saw that tab groups should be out for all users on 5/6/2025 but i'm not seeing the tab groups get created for me, i'd like to avoid editing about:config so when should this be out for me?

[Agentvirtuel]

Hello

About Studies https://support.mozilla.org/en-US/kb/shield

[Agentvirtuel]

An subject https://support.mozilla.org/en-US/questions/1509948

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telemetry

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Manage technical and interaction data collection settings in Firefox
https://support.mozilla.org/en-US/kb/technical-and-interaction-data

about:studies - about:telemetry