I'd like to store an array of primitives in my Realm object, so I am declaring it like:

@Serializable
class Some: RealmObject {

    @PrimaryKey
    var id: String = uuid4().toString()

    private var list: RealmList<Int> = realmListOf()

}

When trying to decode it from the server response I get Expected class kotlinx.serialization.json.JsonObject as the serialized body of kotlinx.serialization.Polymorphic<RealmList>, but had class kotlinx.serialization.json.JsonArray, which is gone in case I mark this list property as @Transient.

I am using Ktor with Json serializer:

val httpClient = HttpClient {
    expectSuccess = true
    install(ContentNegotiation) {
        json(Json {
            ignoreUnknownKeys = true
            encodeDefaults = true
            prettyPrint = true
        })
    }
    install(HttpTimeout) {
        requestTimeoutMillis = 15000
    }
}

Am I missing something? Or RealmList needs a custom serializer to be specified for the class which is using it?