DataCorruptedException when deserializing object with DateTimeOffset property to base class.

[ilearnf]

Code that throws the exception:

[DataContract]
class B : A
{
	[DataMember]
	public DateTimeOffset DateTimeOffset { get; set; }
}

[DataContract]
class A
{
	[DataMember]
	public Guid Guid { get; set; }
}

var b = new B {DateTimeOffset = DateTimeOffset.Now, Guid = Guid.Empty};
var bs = serializer.Serialize(b);
var ad = serializer.Deserialize<A>(bs);

GroBuf's part of StackTrace:

in Read_A_bea5fb9a-e5a8-458d-b989-07e1f3f6a910(IntPtr , Int32& , A& , ReaderContext )
in GroBuf.GroBufReader.Read[T](IntPtr data, Int32& index, Int32 length, T& result) 
in c:\BuildAgent\work\4b2afcefcf307fed\GroBuf\GroBuf\GroBufReader.cs:строка 99
in GroBuf.GroBufReader.Read[T](Byte[] data, T& result) 
in c:\BuildAgent\work\4b2afcefcf307fed\GroBuf\GroBuf\GroBufReader.cs:строка 46
in GroBuf.GroBufReader.Read[T](Byte[] data) 
in c:\BuildAgent\work\4b2afcefcf307fed\GroBuf\GroBuf\GroBufReader.cs:строка 76

Exception - GroBuf.DataCorruptedException {"Unknown type code: 142"} .

[ilearnf]

Also deserialization to class B in this case would work as expected.