Fix initial window sizing with Window.Present
Fix initial window sizing with Window.Present

WindowFrame.AdjustSize() needs to be called
on Present() like it is already done on Show().

hwthomas/xwt,cra0zy/xwt,mono/xwt,antmicro/xwt,hamekoz/xwt,TheBrainTech/xwt,lytico/xwt