Breaks with polymorphic singletons

[gretchenfrage]

I'm using chill 2.12 version 0.9.2.

I have this test code:

trait Foo
object Bar extends Foo
case class FooHolder(foo: Foo)

object ChillTest {

  def main(args: Array[String]): Unit = {
    val instantiator = new ScalaKryoInstantiator
    instantiator.setRegistrationRequired(false)
    val kryo = instantiator.newKryo()
   kryo.setRegistrationRequired(false)

    val baos = new ByteArrayOutputStream
    val out = new Output(baos, 4096)

    kryo.writeObject(out, Seq(FooHolder(Bar)))

    val in = new Input(baos.toByteArray)
    val deser = kryo.readObject(in, classOf[Seq[FooHolder]])
    println(deser)
  }

}

Which yields an InstantiationError:

Exception in thread "main" java.lang.InstantiationError: scala.collection.Seq
	at sun.reflect.GeneratedSerializationConstructorAccessor1.newInstance(Unknown Source)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at org.objenesis.instantiator.sun.SunReflectionFactoryInstantiator.newInstance(SunReflectionFactoryInstantiator.java:45)
	at com.esotericsoftware.kryo.Kryo.newInstance(Kryo.java:1061)
	at com.esotericsoftware.kryo.serializers.FieldSerializer.create(FieldSerializer.java:547)
	at com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:523)
	at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:657)
	at com.phoenixkahlo.hellcraft.serial.KryoTest$.main(GlobalKryo.scala:75)
	at com.phoenixkahlo.hellcraft.serial.KryoTest.main(GlobalKryo.scala)

Am I using this wrong, or is this a glitch? Thanks.