[Bug] [Android] Negative margins on Image not working from 4.4.x

[roubachof]

Description

Since Xamarin.Forms version 4.4, negative margins aren't working anymore on Android.

Steps to Reproduce

1. Clone https://github.com/roubachof/Sharpnado.TaskLoaderView
2. Update XF package to 4.4 on all projects
3. Launch Sample app on Android

Expected Behavior

The Image on each card should take all the width of the Frame cause of the negative horizontal margin:

<Image Grid.Row="2"
       Grid.Column="0"
       Grid.ColumnSpan="2"
       Margin="-15,0"
       Aspect="Fill"
       Source="{local:ImageResource Sample.Images.default_views.png}" />

Actual Behavior

Negative horizontal margin is discarded:

Basic Information

• Version with issue: all versions since xf 4.4
• Last known good version: 4.3.x

Reproduction Link

https://github.com/roubachof/Sharpnado.TaskLoaderView

Workaround

use XF 4.3.x

[PureWeen]

Hmm the only changes I see to the image code between 4.3 and 4.4 are here

d012853#diff-3c9df6c0863723c3b3c1b7d9ebd32619

Seems like it's working fine on UWP

[Druffl3]

To which milestone is this added? 4.6.0? I am on 4.5.0.725, and this issue still exists.

[roubachof]

There is Goutham on the Xamarin slack that is reporting the same issue.

https://xamarinchat.slack.com/archives/C06BQCMK5/p1589366857287400

[Druffl3]

@roubachof , that's me only :P

[jbachelor]

I just ran into this issue as well on Android, using Xamarin.Forms 4.7.0.968.