Indentation in QML RichText after list is wrong

The formatting of text in a QML Text object that has `textFormat: Text.RichText` is wrong for lines that follow a unordered list <ul> with a <br> that is indented itself. See the following example:

import QtQuick 2.12
import QtQuick.Window 2.12

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

    Text {
        textFormat: Text.RichText
        text: "<ul><li>one</li><li>two</li></ul>
 <br>
Hello world indented
<br>
Hello world also indented

<ul><li>one</li><li>two</li></ul>
<br>
Hello world not indented"
    }
}

Observed is that the first two "hello world ..." lines are indented on the same level as the closed <ul>.

I would not expect any of the "hello world ..." lines to be indented since the HTML standard prescribes that whitespace in the source is displayed as a single whitespace.