User roles not synced

We had an issue on our website that the user roles were not being synced any more with LDAP. After some tries I found out that the login operation never reached the user hook in the ldap groups module. Probably after updating some module it got at the end of a queue. So I changed the weight of the ldap integration modules to -1 in the database and it was fixed. I have not noticed any (new/other) problems after this change.