Essa é a mensagem que recebi:
Hi,
Xbox Insider! We recently introduced some updates to
Xbox Live messaging. Like all features in Preview, this is still in development, and we wanted to make you aware that
group messaging between 1902 & 1904 builds is not supported (1-to-1 messaging still works fine!). Also note that messages prior to January 22, 2019, are not yet available but will be made available before GA. In the meantime, you can access all of your messages on the
Xbox PC app or on
www.xbox.com.