LDAP/SSO/PTA - Some users having multiple profiles created on initial signin

After going live I noticed several users have duplicate profiles.

Some users have up to 6 (username, username_1, username_2, username_3, etc), looking at the timestamps the profiles were all created at the same time (users first logon).

I deleted all the profiles for a test user with the issue and had them login again but it only created the 1 profile as intended so still trying to track it down. About 25% of the accounts have duplicates but not sure if all of the users are post 9.2.7 upgrade.