We recently startet to port one of our Apps to UWP too. Since its our first Project on UWP, we might overseen something.
The App is working flawless productive on Android and iOS(Phone and Tablet). With minor changes over the last 8 Month including updating from Xamarin forms 2.5 in multible steps up to current 3.4
On UWP all Gesture Recognizers wich are addet to all sorts of controls, seem to be Input Transparent. (In short: all behind laying GestureRecognizers also trigger).
I did try a few things (I Did read a bit about some Bug with missing Background colors and so on), but i could not solve this issue in any kind.
I see two reasons why this could happen to us:
If you need more information, please let me know, ill try to provide as much as i can.