in new xbox accounts you have the new gamertag system
which add the new id feature in the supported apps it shows like this (some dude) and the id is invisible.in the apps thats doesnt support the new system which in this case is mcbe it shows like this (some dude9952) the id is 9952 and its not intended to appear
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Thank you for your report!
However, this issue is Invalid.
As there is no effect to gameplay and the request is really for Minecraft to support the new GamerTag system this would be considered a feature request rather than a bug.
For more information on the new GamerTag system and how it remains compatible with games not updated for it please see https://support.xbox.com/help/account-profile/profile/gamertag-update-faq.
For suggestions, please visit Minecraft Suggestions on Reddit or visit the Feedback website.
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this time i searched so this is no duplicate