Player Character Attack - replication

Hi,

I have strange situation with my characters on multiplayer LAN mode.

Using my char A I wanna attack char B but only char A loss HP (it look like he attack himself).
When I use my char B, to attack char A nothing happend.

Why in game, char A see second player character with the same outfit as he choose and vice versa (char B see the same outfit of char A) ?
In Lobby they both had different looks.

In link below 2 pictures
http://fotowrzut.pl/7XKBBOMG36

Does anyone know what is wrong ? Still I have this problem.