How can I give feedback about XAML Islands? | One Dev Question

Some fond memories of Windows Phone from Laura Butler. She explains how they made the keyboard work so well.
Want to know more about Laura's projects at Microsoft? Check out this article from 2014: http://msft.social/RxPXeM
Unfortunately, when Microsoft chose SwiftKey instead of Word Flow on iOS, the accuracy dropped off dramatically. I still don't understand why they would should the obviously inferior product.