Disabled User Accounts shown in "Edit Team" User search

Hi,

in our Vibe 3.3 installation "Disabled User Accounts" (accounts no longer synced per LDAP) are shown in "Edit Team" user search. They can be selected. After saving the Dialog Box the selected disabled accounts are not in the member list.
It is strange, that these accounts are shown in the user search. Is it possible to change this behaviour?

Thanks
Martin