Behavior change 6.4.3 -> 6.5.2 QGroupBox styling

QGroupBox{
    padding: 5px 3px;
    border: 1px solid #e9e9e9;
    border-top-width: 32px;
    background: #ffffff;
}
QGroupBox::title{
    font-family: "Roboto Black";
    font-size: 18px;
    color: #444444;
    padding: 8px 10px;
    background: #e9e9e9;
}
QGroupBox.box-primary{
    border-color: #276497;
}
QGroupBox.box-primary::title{
    color: #ffffff;
    background-color: #276497;
}