Multiple TextureViews duplication content

Question

I use custom TextureView to draw animation. Drawing runs in separate thread - here is drawing code:

@Override
public void run() {
    while (running) {
        try {
            Thread.sleep(currentFrameRate);
        } catch (InterruptedException e) {
        }
        Canvas canvas = null;
        try {
            canvas = lockCanvas();
            if (canvas != null)
                canvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR);
            drawItems(canvas);
        } finally {
            if (canvas != null)
                unlockCanvasAndPost(canvas);
        }
    }
}

I use two of these controls in LinearLayout - one below other. But sometimes on some devices one control begin duplicate another if no animation in it at this moment.

Thanks for advance.

UPD: Maybe it helps - both of my views placed over SurfaceView.