In the following example:

public class Test : TestBase
{	
	public new string Value { get; }
}

public class TestBase
{
	public string Value { get; }
}

If you call typeof(Test).GetRuntimeProperties() it only returns 1 property. If you change the property type in the Test class to something else (i.e. int) then it returns 2 properties. That behavior clearly doesn't make sense - I believe it should be returning both properties in both situations.