Fix Gtk3 redraw area after testing
Fix Gtk3 redraw area after testing

mono/xwt,TheBrainTech/xwt,mminns/xwt,residuum/xwt,mminns/xwt,sevoku/xwt,iainx/xwt,lytico/xwt,hwthomas/xwt,hamekoz/xwt,steffenWi/xwt,akrisiun/xwt,cra0zy/xwt,directhex/xwt,antmicro/xwt