The issue with Bengali unicode font not displaying correctly is not a fault of the KGS software. Those users who have this problem should install fonts that include Bengali in Java. The KGS help page is https://www.gokgs.com/help/faq/fonts.html . Linux users should be warned that cyberbit.tff does not include fonts for Bengali. Those who want Bengali will have to use a different file in place of or in addition to cyberbit.tff. A rather long page here at Sensei's can be found at http://senseis.xmp.net/?AsianFontsJava .