Xamarin.forms Shell Drawer/Opener Issue for RTL Language

Hi,
i am working on xamarin.forms app with Shell 4.0.0-pre9 everything working fine but,
i have Menu/Shell opening issue for iPad & iPhone differently.
for example
at iPad it opens from Right to Left fine,
at iPhone it open from Left to Right "not acceptable" by my customer.

so please help me in this regards,
i am using Xamarin.Forms 4.0.0-pre9 & Shell type App.

here is Picture without menu:

here is Picture with menu:

Thank you,
-AH