line-height does not work in QML Text RichText

import QtQuick 2.4

Row {
    Text {
        width: 200
        textFormat: Text.RichText
        wrapMode: Text.WordWrap
        text: "<style>
                p {
                    color: #777;
                    line-height: 200%;
                }
               </style><p>This is a test of text rendering with a varying line height which seems to be broken</p>"
    }

    Text {
        width: 200
        wrapMode: Text.WordWrap
        textFormat: Text.RichText
        text: "<style>
                p {
                    color: #555;
                    line-height: 100%;
                }
               </style><p>This is a test of text rendering with a varying line height which seems to be broken</p>"
    }
}