We are using an Active Directory as security realm / for the Jenkins login which does not differ between a Firstname.Lastname and a firstname.lastname. Both notations can be used for the login.

The folder-auth-plugin however differs in the notation. Granting permission for the SID firstname.lastname will not grant the permission if the user logs in with a differnt notation (Firstname.lastname / Firstname.Lastname / ...).

This behaviour shall be removed so that a user logging in with Firstname.Lastname is matched with the SID firstname.lastname.