Regression in v13?

[n9]

Source/destination types

class Foo
{
    public JToken Bar = JValue.CreateUndefined();
}

Source/destination JSON

{"Bar":{}}

Expected behavior

No exception. As in versions < 13.

Actual behavior

It fails with the following exception in the current version 13.0.1.

Newtonsoft.Json.JsonSerializationException: Deserialized JSON type 'Newtonsoft.Json.Linq.JObject' is not compatible with expected type 'Newtonsoft.Json.Linq.JValue'. Path 'Bar', line 1, position 9.
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateJToken(JsonReader reader, JsonContract contract)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue(JsonProperty property, JsonConverter propertyConverter, JsonContainerContract containerContract, JsonProperty containerProperty, JsonReader reader, Object target)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, String id)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)
   at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)
   at Newtonsoft.Json.JsonSerializer.Deserialize(JsonReader reader, Type objectType)
   at Newtonsoft.Json.JsonSerializer.Deserialize[T](JsonReader reader)

Steps to reproduce

JsonSerializer.CreateDefault().Deserialize<Foo>(new JsonTextReader(new StringReader("{\"Bar\":{}}")));

Notes

The problem is caused by the initialization: = JValue.CreateUndefined();.

[ejball]

Looks like a duplicate of #2529, which was fixed last May via #2530 but unfortunately still not published.

[n9]

Yes, it seems to.