Extended UIButton border is not initially drawn

This works

public class MyButton : UIButton
{
    public MyButton() : base(UIButtonType.RoundedRect) { }


    public override RectangleF Frame {
        get {
            return base.Frame;
        }
        set {
            var temp = TranslatesAutoresizingMaskIntoConstraints;
            TranslatesAutoresizingMaskIntoConstraints = false;
            var constraints = new [] {
                NSLayoutConstraint.Create(this, NSLayoutAttribute.Width, NSLayoutRelation.Equal, null, NSLayoutAttribute.NoAttribute, 1.0f, value.Width),
                NSLayoutConstraint.Create(this, NSLayoutAttribute.Height, NSLayoutRelation.Equal, null, NSLayoutAttribute.NoAttribute, 1.0f, value.Height)
            };
            AddConstraints(constraints);
            SizeToFit();
            RemoveConstraints(constraints);
            base.Frame = value;
            TranslatesAutoresizingMaskIntoConstraints = temp;
        }
    }
}

This is only a workaround, it appears to be a bug. The SizeToFit() fixes the issue, the other code maintains the frame.