Change Delivery Date when moving Sales Order around Calendar

Hello, we are on version-12 latest update, self-hosted.

We encounter a problem when trying to change Sales Order’s Delivery Date, after submission.
We could Cancel, and Amend, but this solution can’t work, when we Drag and Drop a Sales Order in Calendar module.

If I understand it right, the Delivery Date of Sales Order should change itself when Sales Order is being dragged to another day in the Calendar.

Thanks for any insights. Maybe this is a feature, not a bug?

Similar topic (old): How to change delivery date in a submitted Sales Orders

Warm regards