[Bug]: Incorrect theme change

zhiyiYo / PyQt-Fluent-Widgets

A fluent design widgets library based on C++ Qt/PyQt/PySide. Make Qt Great Again.

GNU General Public License v3.0

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What happened?

incorrect theme change

https://github.com/zhiyiYo/PyQt-Fluent-Widgets/assets/68778953/bdc8728d-46ab-4029-af07-198954acb9a5

Operation System

Windows11 23H2

Python Version

3.12.3 x64

PyQt/PySide Version

PySide6 6.6.3.1

PyQt/PySide-Fluent-Widgets Version

1.5.5

How to Reproduce?

Run the code below and change the theme in Windows settings from dark to light

Minimum code

import sys
from PySide6.QtWidgets import QApplication
from qfluentwidgets import FluentWindow, setTheme, Theme

setTheme(Theme.DARK)
app = QApplication(sys.argv)
window = FluentWindow()
window.show()
sys.exit(app.exec())