Hello Rikk,
thank you for your answer and your time answering to my ideas !
To keep up with your example, when having a stack with 200 included images and chose accidentally edit in PS, it will also cause you to wait for the export of all the images or having to cancel this function as well.
So, the behavior of a stack is different, and to my feeling, it should be the same for all.
I will try to convert this to an idea to see what will happen.
Best wishes Robert