Hi Kyung,
We have considered your reported issue "Drag and drop on same column doesn't work properly after multiple card selection in Kanban" as a bug from our end and the fix for the issue will be included with our upcoming patch release on 22nd November 2022.
Now you can track the status of the reported issue through the below feedback link,
Disclaimer: “Inclusion of this solution in the weekly release may change due to other factors including but not limited to QA checks and works reprioritization.”
Regards,