Can you try something for me to see if this will make it work for you?
Edit the file JambaDisplayTeam.lua in the Jamba-DisplayTeam folder.
In the following lines, change "none" to "short".
Line 572 goes from
healthBarClick:SetAttribute( "unit", Ambiguate( characterName, "none" ) )
to
healthBarClick:SetAttribute( "unit", Ambiguate( characterName, "short" ) )
and line 595 from
powerBarClick:SetAttribute( "unit", Ambiguate( characterName, "none" ) )
to
powerBarClick:SetAttribute( "unit", Ambiguate( characterName, "short" ) )
Reload your UI and see if that helps clique work.
The different values for Ambiguate are listed here. "short" appears that it would not work for cross-realm, so perhaps "all" is worth trying to accommodate both same and cross realm.
http://wow.gamepedia.com/API_Ambiguate