Comment 3 for bug 1889851

Hi Olivier,
thanks for the report - I can confirm that this triggers the issue:

$ apt install python3-pyqt5 python3-pyqt5.qtsql libqt5sql5-mysql
$ cat > test.py << EOF
#!/usr/bin/python3

# -*- coding: utf-8 -*-

import sys
from PyQt5.QtWidgets import QApplication
from PyQt5.QtSql import QSqlDatabase

app = QApplication(sys.argv)
db = QSqlDatabase.addDatabase("QMYSQL")
EOF
$ python3 test.py

And also that I can switch in/out of the behavior between versions 8.0.21-0ubuntu0.20.04.3 / 8.0.19-0ubuntu5 of libmysqlclient21.