Steps to reproduce:

1. Create 2 LDAPs server with differents domain with JIT
2. Set LDAP1 as default
3. Login with a first time user on LDAP1
4. Login with a first time user on LDAP2
5. Set LDAP2 as default
6. Login with the same user on LDAP1
7. Login with the same user on LDAP2

Result:

The first time user on LDAP1 is successfully created with the right access

The first time user on LDAP2 is not created and fail with the error "Incorrect user name or password or account is temporarily blocked."

When switching default LDAP server, the user already created can successfully login, the LDAP2 user can login and is successfully created.

Expected:
Whatever the default is, a first time user should be able to be sucessfully created with JIT if it exist within one of the configured LDAP servers.