This still happens in 1.2 and I actually believe that it got worse with the last update. Sometimes tags will be just random AI names even though it is a real player.
Windows 10
Reforger 1.2.0.76

@Snake1984 It could also be special characters. I've encoutered one guy and he told me he was using special characters.

@purechaos: I am pretty sure that this is not the problem… I am playing on a private server with the same guys. Sometimes it’s working - sometimes not.

Still happening with 1.0.92. Any plans to fix this? :-(
I have the impression that this might have something to do with server performance.