Switching theme light and Dark Label cuts off

import QtQuick
import QtQuick.Controls

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    Label {
        text: "<p><strong>Mount Shasta </strong><span style='color:#000000;'>is a peak in California's&nbsp;</span>Cascade Range range, It ranks <span style='color:#dc143c;'><strong>#6&nbsp;</strong></span><span style='color:rgb(0,0,0);'><strong>&nbsp;</strong>in the list of California fourteeners.</span><br /><br /><span style='color:rgb(0,0,0);'>The summit is&nbsp;</span><span style='color:#0000cd;'><strong>14,179&nbsp;</strong></span><span style='color:#000000;'>feet high (&nbsp;</span>4,322 meters), and has a prominence of&nbsp;9,832 feet (&nbsp;2,997 meters).<br /><a href='http://en.wikipedia.org/wiki/File:Shasta_from_south.jpg' target='_blank' rel='nofollow ugc noopener noreferrer'>Photo credit</a></p>"
        textFormat: TextEdit.RichText
        anchors {
            fill: parent
            centerIn: parent
        }
        wrapMode: TextEdit.Wrap
    }
}