DeSerializerAdapter lead field missing while serializing

[82295007]

com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper#write

@SuppressWarnings({"rawtypes", "unchecked"})
@OverRide
public void write(JsonWriter out, T value) throws IOException {
...
if (runtimeType != type) {
TypeAdapter runtimeTypeAdapter = context.getAdapter(TypeToken.get(runtimeType));
if (!(runtimeTypeAdapter instanceof ReflectiveTypeAdapterFactory.Adapter)) {
// The user registered a type adapter for the runtime type, so we will use that
chosen = runtimeTypeAdapter;
} else if (!(delegate instanceof ReflectiveTypeAdapterFactory.Adapter)) {
// The user registered a type adapter for Base class, so we prefer it over the
// reflective type adapter for the runtime type
chosen = delegate;
} else {
...
}

I created a Gson instance using GsonBuilder which registered a JsonDeserializer for type BaseQuestion.

And there is a class Form has a field of List holding BaseQuestion's instances ( i.g ScoreQuestion extends BaseQuestion ).

When I trying to serialize Form by using gson.toJson(form), I found that variable delegate was used as variable chosen but it was just a JsonDeserializer. It leads ScoreQuestion declare fields missed.

Should variable delegate distinguish by read or write operation ? For example , readDelegate ,writeDelegate, not just a TreeTypeAdapter.

[Marcono1234]

Does #2032 describe your issue? If not, and this is still relevant, could you please create a small self-contained sample showing this?

[Marcono1234]

I am going to close this because no answer has been provided. If you still experience this with the latest Gson version, feel free to comment here again with more details.