Android and windows can't display the font glyph that have the unicode from $E000-$F8FF, it is difined as Private Use Area

Question

Font glyph have unicode from $E000-$F8FF and start with $F will do not display on android, ios & win is ok.

Font glyph have unicode from $E000-$F8FF and start with $E will do not display on windows, ios & android is ok.

     <Label x:Name="labFont" HorizontalOptions="Center"/>

 labFont.FontFamily = "FINPERC.ttf";
        labFont.FontSize = 60;
        labFont.Text = "\uF052";