pyqt5 - QFileSystemModel 的图标功能在 Windows 上的 PyQt6 中是否损坏？

Question

PyQt5 代码：

from PyQt5.QtWidgets import QApplication, QFileSystemModel, QTreeView
from pathlib import Path

app =QApplication([])

model = QFileSystemModel()
cwd_str = f'{Path.cwd()}'
model.setRootPath(cwd_str)

treeview = QTreeView()
treeview.setModel(model)


root_idx = model.index(cwd_str)
treeview.setRootIndex(root_idx)

treeview.show()
app.exec()

PyQt6 代码：

from PyQt6.QtGui import QFileSystemModel
from PyQt6.QtWidgets import QApplication, QTreeView
from pathlib import Path

app =QApplication([])

model = QFileSystemModel()
cwd_str = f'{Path.cwd()}'
model.setRootPath(cwd_str)

treeview = QTreeView()
treeview.setModel(model)

root_idx = model.index(cwd_str)
treeview.setRootIndex(root_idx)

treeview.show()
app.exec()

我已经明确尝试设置 QFileIconProvider ：（来自PyQt QFileIconProvider 类自定义图标）

class IconProvider(QtGui.QFileIconProvider):
    def icon(self, fileInfo):
        if fileInfo.isDir():
            return QtGui.QIcon("folder.png") 
        return QtGui.QFileIconProvider.icon(self, fileInfo)

对于 PyQt6，这将显示为目录提供的图标，但仍然不显示其他文件的图标