Reopen closed PDFs (pop-up)
Acrobat closed abruptly. You can restore the PDFs you had open.

It closed abruptly because I clicked the (X) in the top right of the application to close the app., while it was apparently doing some other function and not paying attention to the GUI.
There seems to be too much extra communication and file parsing happening, when I only want to OPEN the PDF.
How can I remove this "feature", so that the application responds to me, rather than attempting to determine what I want ?