Thank you Andrew and Denis. Yes, I understand what you say. But…
The default is the button which is selected in blue, in the example “Edit Original”. Hit enter and this is what you get.
There are two other options – “Edit a copy” and, outlined in blue, “Edit a copy with Lightroom Adjustments”. Why is the top radio button outlined in blue ? There are NO Lightroom Adjustments with this or other files I have tested.
Mystery…