the line # 456 in UnitOfWork.php seems wrong to me:
$isChangeTrackingNotify = isset($this->entityChangeSets[$oid]);
Shouldn't this only be set if the entity has
set in his class docBlock? The current behaviour now is to assign $changeset if changes exists, leaving the NOTIFY tracking policy out:
$changeSet = $isChangeTrackingNotify ? $this->entityChangeSets[$oid] : array();
Because of this change, all our unit tests involving saving of entites break (basically, the whole application), which implement @postUpdate for logging purposes logging an own computed changeset.