In Czech localization when u change your name of player it gives u ,,Hráč:"Name",, when u acidentaly click in main screen of the game somewhere outside your name will change to ,,Hráč:Hráč:"Name,, and so on.
Also when u have czech localization enabled some text just missing ( and isnt replaced by english version ) - like :
server list (add to favorites )
some items actions ( Inspect,etc)