mimeData crashes when drag & drop

from PySide6 import QAbstractItemModel ...

def mimeData(self, indexes):
...
mimeData = QMimeData()
....
return mimeData

This code crashes app.

So I create an attribute in initializer and recreate this attribute in mimeData method because it is garbaged after drop.

def _init_(self):
self.mimeData = QMimeData()

def mimeData(self, indexes):
...
self.mimeData = QMimeData()
...
return self.mimeData

I think this problem is a kind of lifecycle of PySide.
On the past time, I have reported a bug about createObject of QTextDocument. I think this is very similar to this bug.