CornerRadius not working in Xamarin.iOS current versions (somewhat workaround inside)

[idchlife]

Describe the bug
I updated Xamarin Forms and CornerRadius no longer works.

To Reproduce
Steps to reproduce the behavior:

1. Update any project or create new with versions:

Xamarin.iOS - 13.20.1.18
Xamarin.Forms- 4.7.0.1080

2. Run iOS project. See that buttons is not rounded if you specify CornerRadius.

Expected behavior
CornerRadius to work. Buttons square as if there was no corner radius.

Screenshots

Please complete the following information:

• Which version of the FlexButton do you use? - 0.11.0
• Which version of Xamarin.Forms do you use? 4.7.0.1080
• Which OS are you talking about? iOS

Additional information if needed:

I fixed it in my app by providing custom ViewRenderer for iOS with this code:

[assembly: ExportRenderer(typeof(FlexButton), typeof(FlexButtonFixRenderer))]
namespace ReceiptsApp.iOS.Views.UI {
  public class FlexButtonFixRenderer : ViewRenderer {
    public FlexButtonFixRenderer() {
    }

    protected override void OnElementChanged(ElementChangedEventArgs<View> e) {
      base.OnElementChanged(e);

      Debug.WriteLine("IM HERE");

      if (e.NewElement == null) return;

      var element = e.NewElement;

      if (element == null) return;

      Debug.WriteLine("ELEMENT IS NOT NULL!");

      try {
        if (Element is FlexButton flex) {
          Debug.WriteLine("FIXING FLEX BUTTON BUG WITH NO CORNER RADIUS");
          if (flex.CornerRadius <= 0) return;

          NativeView.Layer.CornerRadius = flex.CornerRadius;
          //NativeView.ClipsToBounds = true;

          Debug.WriteLine("DONE FIXING");
          //control.Layer.Boun
	  
        }
      } catch (Exception exc) {
        Debug.WriteLine("ERROR FIXING FLEX BUTTON ROUND EFFECT");
        Debug.WriteLine(exc);
      }

    }
  }
}

BUT it kills border because of ClipsToBounds 😩

[mike-rowley]

@idchlife I think this project has been abandoned. I posted a message over 6 weeks ago asking Robin-Manuel, the repository owner, about its status and haven't received a response.

I have pulled the code repository and am making necessary changes within my own project code base, unfortunately I don't have the time or requisite control building experience to continue development on this publicly.

I have run into the issue you have described and thought I would share what I have found, it appears to be related to this Xam Forms bug:
xamarin/Xamarin.Forms#2405

[robinmanuelthiel]

Fixed in v0.13.0