Xamarin.forms: [UWP] Forms loses the correct reference to the cell after adding and removing items to a ListView

[giusepe]

Description

UWP loses the correct reference to the cell after adding and removing items to a ListView.

I found this related bug on bugzilla with a nice sample: https://bugzilla.xamarin.com/show_bug.cgi?id=42999, I have updated the sample and uploaded to a git repo here: https://github.com/giusepe/UWPContextActionsBug

Steps to Reproduce

1. Run the sample on UWP
2. Add Item 4 (top button)
3. Remove Item 4 (Context Menu)

Expected Behavior

Item 4 to be removed

Actual Behavior

Item 4 will still visible
When you try to toggle it to read, the app crashes

Works on iOS and Android as expected.

Basic Information

• Version with issue:
• Last known good version:
• IDE:
• Platform Target Frameworks:
  
  
  
  • iOS:
  
  
  • Android:
  
  
  • UWP: 16299
  
  
• Android Support Library Version:

• Nuget Packages:
  Xamarin.Forms 3.1.0.697729
  Microsoft.NETCore.UniversalWindowsPlatform 6.1.7

• Affected Devices: Only tried on a Windows PC (x86)

Screenshots

Reproduction Link

https://github.com/giusepe/UWPContextActionsBug

[hartez]

In order to reproduce the issue, I had to:

• Run the sample on UWP
• Remove Item 3 (via Context Menu)
• Add Item 4 (top button)
• Remove Item 4 (Context Menu) (will still be visible)

After that, attempting to set Item 4 to 'read' via the context menu causes a crash.

[giusepe]

Ops, sorry @hartez for the wrong directions, I made this so many times to figure out and in the end, I wrote it wrong.