Required properties causes error

Hi, when I have a class like:

[MemoryPackable(GenerateType.CircularReference)]
public partial class MyClass
{
    [MemoryPackOrder(0)]
    public MyOtherClass? Parent { get; set; }

    [MemoryPackOrder(1)]
    public required string Key {get; set;} = string.Empty;
}

It gives me an error:
Required member 'MyClass.Key' must be set in the object initializer or attribute constructor.

The error is inside generated file: MyClass.MemoryPackFormatter.g.cs inside Deserialize method:

if (value == null)
{
    value = new MyClass();
}

Reproduce the example and inspect MyClass.MemoryPackFormatter.g.cs, focusing on the Deserialize method and the shown new MyClass() construction. Trace which generator entry point emits that code, then verify that the generated formatter compiles for a required property and deserialization completes without the reported error.