Already fixed, in v32. That window was hand-drawn chrome, and its button labels were being rendered twice with a slight offset - which is the doubled 'Create tGuild' / 'Join GGuild' you screenshotted. It has since been replaced wholesale by the authentic v83 MAPLE USER LIST window (real UIWindow.img art), so the duplicated text is gone with the panel it lived in.

Your report was filed a few hours before v32 went out. Please confirm on the current build - if you still see doubled text anywhere, reopen and I will chase it.