Invisible text (Diablo 2)

The problem is that when typing it is visible, and press enter and the screen is blank. If he had not scored at all. When this Persian writing in the General chat this is not a problem. You can see everything. Could I knock the settings of the game that led to this situation? Chara with another text seen...Apparently that is not so pressed. In principle, the game is not stopping, but just unpleasant.