Bitbucket Server attempts to add AD user to group twice

[Martin Zimmerman]

We are using Windows AD with Bitbucket server and saw a set of errors caused when a new user was added to AD.

Bitbucket is attempting to add the new user to a group (based on the AD group), but for some reason the user already exists in that group but with a different id (primary key).  The attempt to insert fails as a result of violating the unique constraints.

Here is the SQL statement that fails (names have been changed):

insert into
cwd_membership (parent_id,
                child_id,
                membership_type,
                group_type,
                parent_ name,
                lower_parent_name,
                child_name,
                lower_child_name,
                created_date,
                directory_id,
                id)
Values (295004,
        1540097,
        'GROUP_USER',
        'GROUP',
        'Employees',
        'employees',
        'john.doe',
        'john.doe',
        '2021-07-28 13:17:41.355-04',
         229379,
         1572876)

A record for this user already exists in the table, with the same information, but with a different id (primary key).
The existing record has an id of 1572868, while the record being inserted has an id of 1572876.

I'm not sure where (or how) Bitbucket is determining the id to use for inserting into the table.

Can anyone explain why Bitbucket is trying to add this user to the group TWICE?

Should I update the existing record to match the new id Bitbucket is trying to use?