[Python] pyqtgraph plots and axes are flickering - rendering issue

I am using pyqtgraph but whatever I am doing I am stuck with the following bug: for any plots, axes and plot is flickering and I cannot see anything. I put a GIF to show my problem and the corresponding code

import pyqtgraph as pg
from PySide6.QtWidgets import QApplication, QMainWindow
import sys
import numpy as np

app = QApplication(sys.argv)

win = QMainWindow()
plot_widget = pg.PlotWidget()
win.setCentralWidget(plot_widget)

x = np.linspace(0, 10, 1000)
y = np.sin(x)
plot_widget.plot(x, y)

win.show()
sys.exit(app.exec())



os : Ubuntu 22.04.5 LTS.
Python env:

• Python 3.10.13
• pyqtgraph, Version: 0.13.7
• PySide6, Version: 6.9.1
• numpy, Version 2.2.6

I assume it is a rendering issue related to the system and not Python or code logic since I tried using code from basic tutorial which led to different output than the one expected in the tutorial (ex. first plot of this page)

I tried several backend by setting QT_QPA_PLATFORM env variable to xcb or wayland but did not work.

I tried this settings at the begining of my script, but it did not work.

os.environ["QT_QPA_PLATFORM"] = "xcb"
os.environ["QT_OPENGL"] = "software"
os.environ["LIBGL_ALWAYS_SOFTWARE"] = "1"


Link to the gif https://gifyu.com/image/bKIQU

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