Getting Lock from reflection

It's just an experiment Retrieve Lock object from ArrayBlockingQueue using reflection. Then call lock.lock() and spawn a thread which will try to add a value to queue. I just don't understand why spawned thread successfully calls lock() and adds the value to the queue.

CODE:

        ArrayBlockingQueue<Integer> queue = new ArrayBlockingQueue<>(10);
        Field lockField = ArrayBlockingQueue.class.getDeclaredField("lock");
        lockField.setAccessible(true);
        ReentrantLock lock = (ReentrantLock) lockField.get(queue);
        lock.lock();
        Thread t = new Thread(new Runnable() {
            @Override
            public void run() {
                queue.add(1);
            }
        });
        t.start();
        Thread.sleep(2000);
        System.out.println(queue.take());

Actual: output 1

Expected: hanging after queue.take() call

Please explain such behavior