Jabber for Windows 10.5 shows contacts from Address Book multiple times?

[Jason Aarons]

What would cause Jabber for Windows 10.5.1 to show a contact multiple times from the address book when searching?  See attached screenshot. 

[Registrations Iconix]

We have the same issue. Some users can't even see the contacts to initiate IM. It's all hit and miss and documentation on this is pretty sparse.

[Registrations Iconix]

Turns out, there are imported users and then there are users synced with AD. I am approaching the vendors to figure out how to clean/merge them.