Problems with Picker/Titles in WP-Emulator

Hi all

In my project (based on template “Blank App (Xamarin.forms Shared)” I have a page with Pickers and Title.
Installed version of Xamarin.Forms: 1.2.2.6243

In iOS and Android the Title to the Picker is showed correct, in WP-Emulator the Title is not displayed (there is only an empty black box showed).

Is this known bug or do I miss something…?

In WP-Emulator, also Page-Titles are not displayed (in iOS and Android there are displayed)

Is this known bug or do I miss something…?

Thanks