Xamarin.forms: [Bug] Frame corner radius.

[AlexAba]

Description

After updating from v3.6.0.344457 to v4.2.0.848062 frame cease to cut corners of child elements.

Steps to Reproduce

1. Create frame with any corner radius and NOT ZERO padding.
2. Create one more frame as a child of the first with any corner radius and ZERO padding.
3. Into the second frame insert boxview(can be any view)

Expected Behavior

Child elements has cut corners.

Actual Behavior

Child elements don't has cut corners

Code for screenshot

<StackLayout>
    <Frame CornerRadius="5" BackgroundColor="Red" Padding="10">
        <Frame CornerRadius="10" BackgroundColor="Blue" Padding="0">
            <BoxView BackgroundColor="Green" HeightRequest="100" WidthRequest="100"/>
        </Frame>
    </Frame>
</StackLayout>

Screenshots

[samhouts]

@AlexAba What platform do you see this on? Android? iOS? UWP? Can you please attach a small project that demonstrates this issue? Thanks!

[AlexAba]

Android

[PureWeen]

It looks like this regressed when the ClipToBounds defaults shifted on Android
If you set the inner frame to Frame IsClippedToBounds="True" then it clips to the radius correctly

This should just be a matter of doing that automatically on the Frame when corner radius is set

[samhouts]

closed by #8032

[vinksharma]

Facing this issue again after upgrading to 4.7.0.968