Not working RemoteManager.getBulk() and keySet() in compatibility mode

org.infinispan.client.hotrod.exceptions.HotRodClientException:Request for message id[3] returned server error (status=0x85): java.lang.ClassCastException: java.lang.Integer cannot be cast to [B
	at org.infinispan.client.hotrod.impl.protocol.Codec10.checkForErrorsInResponseStatus(Codec10.java:143)
	at org.infinispan.client.hotrod.impl.protocol.Codec10.readHeader(Codec10.java:99)
	at org.infinispan.client.hotrod.impl.operations.HotRodOperation.readHeaderAndValidate(HotRodOperation.java:56)
...

public void testEmbeddedPutHotRodGetBulk() {
      Cache<Integer, Integer> embedded = cacheFactory.getEmbeddedCache();
      RemoteCache<Integer, Integer> remote = cacheFactory.getHotRodCache();

      populateCacheManager(embedded);

      Map<Integer, Integer> get = remote.getBulk();
      assertEquals(100, get.size());

      for(int i = 0; i < 100; i++) {
         assertTrue(get.containsValue(i));
         assertTrue(get.containsKey(i));
      }
   }