I've tried reenrolling/unenrolling many, many times. One machine, one user account, one Microsoft account. Waited a day, waited a week, MS store keeps giving me the Beta version. Short of giving me direct access to the stable package release in the launcher, I haven't seen any solution that ironclad works for me. This is a very suspicious bug that has not been fixed. And I have no way of knowing where it is, or who can fix it.
Every time I log into the most recent stable version of bedrock on PC, the custom character in the third slot is overwritten with Makena. I re-do the character, save, log off, switch to another PC, and it happens again.