QSerialPort::waitForReadyRead returns immediately even if there is no data recieved. Windows port only

QSerialPort::waitForReadyRead returns immediately even if there is no data recieved. Windows port only

QSerialPort port;

... // open, init, other

port.waitForReadyRead(100);
QByteArray chunk = port.readAll()

If the serial input buffer is empty the following code will not block for 100mS, and chunk will be empty.

ps. I could not find the SerialPort Component in the Jira system thus the component field might be changed or SerialPort Component needs to be added into the system.