Unable to initialize custom MobileElement block with AppiumFieldDecorator

The problem

Have such page object:
public class SomeOtherScreen extends BaseScreen {
@AndroidFindBy(xpath = "some locator")
private MyElementsBlock myElementsBlock; //details of this type described below

@AndroidFindBy(xpath = "some locator")
private MobileElement loginButton;

public SomeOtherScreen(AppiumDriver<MobileElement> driver) {
    super(driver);
}

//some other methods to perform actions on screen

}
At the same time MyelementsBlock has nex structure:

public class MyElementsBlock extends MobileElement {
@AndroidFindBy(xpath = "some locator")
private List someOtherBlocksList;

@AndroidFindBy(xpath = "some locator")
private List<MobileElement> mobileElementsList;

}

Elements initialization:

public abstract class BaseScreen {
protected AppiumDriver driver;

public BaseScreen(AppiumDriver<MobileElement> driver) {
    this.driver = driver;
    PageFactory.initElements(new AppiumFieldDecorator(driver), this);
}

}

During running in fails on "PageFactory.initElements(new AppiumFieldDecorator(driver), this)" with next message:
java.lang.IllegalArgumentException: Can not set com.application.blocks.MyElementsBlock field com.application.screens.SomeOtherScreen.myElementsBlock to io.appium.java_client.android.AndroidElement$$EnhancerByCGLIB$$b598166c

Environment

• Appium version (or git revision) that exhibits the issue: 1.71
• Last Appium version that did not exhibit the issue (if applicable):
• Desktop OS/version used to run Appium: Windows 10
• Node.js version (unless using Appium.app|exe):
• Mobile platform/version under test: Android 5.1
• Real device or emulator/simulator: Genymotion (Samsung Galaxy S6)
• Appium CLI or Appium.app|exe:

Any ideas?

Start with the BaseScreen constructor and the PageFactory.initElements(new AppiumFieldDecorator(driver), this) call shown in the issue. Trace how AppiumFieldDecorator handles the MyElementsBlock field and compare that with the MobileElement type expected by the field. Done means the example initializes without IllegalArgumentException, including its declared nested fields.