How to always keep alphabetical order for editor tabs

Situation

When the option to 'Sort tabs alphabetically' is enabled in File | Settings | Editor | General | Editor Tabs, dragging any editor tab immediately cancels the sorting. It is the default behavior.

Question

Is there a way to disable this behavior and keep the sorting in place permanently?

Answer

Yes, there is a way to keep the alphabetical order always enabled:

1. Enable the option to 'Sort tabs alphabetically' in File | Settings | Editor | General | Editor Tabs

2. Drag any editor tab so that a notification popup is shown in the bottom right corner of the editor

3. In the 'Alphabetical tabs order is turned off' notification, click 'Always keep sorting enabled'. If the notification shows 'More...', click it first: