LateJoiner example The Volatile Subsciber not reading anything

[gmihi]

I run the example FastDDS/examples/DDS/LateJoiners, build with CMake. and run exe.

application behavior should be according to the readme

• The Volatile Subscriber only holds the last 20 samples sent after its creation.
• The Transient-Local Subscriber holds all samples, including the 20 that were sent before its creation.

issue - but I am not receiving anything from Volatile Subscriber

also tried changing wqos.durability().kind = VOLATILE_DURABILITY_QOS;
still same result, VOLATILE subscriber not receiving anyhting

Transient-Local is okay, it holds 40 samples

[gmihi]

putting sleep after creation of myReader2 resolved the problem

DataReader* myReader2 = mySub2->create_datareader(SubTopic, rvqos);

if (myReader2 == nullptr)
{
    std::cout << "something went wrong while creating the Volatile Subscriber DataReader..." << std::endl;
    return;
}

std::this_thread::sleep_for(std::chrono::milliseconds(100)); // sleep after myReader2