[UWP] TapGestureRecognizer No Longer Blocks List View Item Tapped Event

Description

TapGestureRecognizers inside the view cell of a list view no longer block the item tapped/item selected event of a list view.

Steps to Reproduce

1. Create a list view with item tapped and or item selected events.
2. Have a control with a tap gesture recognizer inside the view cell.
3. Tap gesture recognizer doesn't block item tapped / item selected events.

Expected Behavior

The TapGestureRecognizer should block the item tapped / item selected event from firing. This use to be the behavior.

Actual Behavior

Both the TapGestureRecognizer and the item tapped / item selected events fire.

Basic Information

• Version with issue: 2.5.0.121934
• Last known good version: 2.3.4.270
• IDE: VS 2017 15.5.1
• Platform Target Frameworks:
  • UWP: 15063
• Nuget Packages: Xamarin Forms
• Affected Devices: UWP

Reproduction Link

Here is a reproduction solution https://drive.google.com/file/d/1iud-OgALmeTw1Jf1q6xKMGG00v2xsNhF/view?usp=sharing

https://bugzilla.xamarin.com/show_bug.cgi?id=32842