QCryptographicHash h(QCryptographicHash::Sha3_224);

is giving completely wrong hash result() output under 5.9.1. Qt 5.8, 5.7, 5.5 & 5.4 all match and are different to 5.9.1.

To repro, 

   QCryptographicHash h(QCryptographicHash::Sha3_224);

   h.reset();

   h.addData(seedBytes);

   h.addData(serialBytes);

   QByteArray hash = h.result();

where seedBytes is a QByteArray of length 12 and serialBytes is a QByteArray of length 10. Compare "hash" from 5.9.1 to other QT versions listed above.