QTextdocument: Justified HTML alignment not working - qt

Question

I am using PySide6 (version 6.3.2) in Python to generate a QTextDocument widget, filled with some text, where I want to justify the alignment. This is a simplified version of my code:
import sys
from PySide6.QtCore import *
from PySide6.QtGui import *
from PySide6.QtWidgets import *
class MainWindow(QMainWindow):
def __init__(self):
super().__init__()
centralWidget = TextDocument()
self.setCentralWidget(centralWidget)
self.setGeometry(500, 250, 400, 300)
self.show()
class TextDocument(QWidget):
def __init__(self, alignment: str = "justify"):
super().__init__()
text = "Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet."
self.text = f"""
<p style="text-align: {alignment};">{text}</p>
"""
def paintEvent(self, event: QPaintEvent) -> None:
p = QPainter(self)
rect = self.rect()
doc = QTextDocument()
doc.setHtml(self.text)
doc.setTextWidth(rect.width())
doc.drawContents(p, rect)
if __name__ == "__main__":
app = QCoreApplication.instance()
if app is None:
app = QApplication(sys.argv)
app.setStyle("Fusion")
win = MainWindow()
sys.exit(app.exec())
This is what I get:
This is what I want:
Weirdly enough, when changing the html alignment, e.g.
def __init__(self, alignment: str = "right"):
...
I receive:
According to the Qt Documentation, "justify" should be accepted as alignment (at least if I am reading it correctly), so why doesn't it work?
Is there maybe some other way of aligning the text as I want it (I don't care if I use html for formatting or not, but all my other attempts failed)
I would appreciate any help (also with C++ code if you rather use qt in C++) - Thanks!