Why is my PyQt5 App in dark design on MacOS and light on Windows?

HeyHouBenjo

Hello,
I have a simple PyQT5-App:

import sys

from PyQt5.QtWidgets import QApplication, QWidget

app = QApplication(sys.argv)

window = QWidget()
window.show()

app.exec()

On my Windows 10 Machine, the window is white.
On my macOS Big Sur 11.4, the window is dark.
In both systems, the default app style is set to dark.
If I set the style to light, its white on both systems.

Why is this as it is, and how can I avoid the difference on dark systems?
I prefer the dark design.

SGaist

Hi and welcome to devnet,

Which version of PyQt5 are you using ?

HeyHouBenjo

Hello,

Sorry for the late response, my PyQt5 Version is 5.15.6

SGaist

You are likely hitting QTBUG-72028