[Xwt.Gtk] Correctly implement previous workaround
[Xwt.Gtk] Correctly implement previous workaround

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