All of the episodes of “The Simpsons” are now available in their original aspect ratio of 4:3, but it requires the viewers to take on key step.
Select “The Simpsons” in your preferred Disney+ viewing experience and select “Details.”
There will be a button that reads “Remastered Aspect Ratio” and you’ll see the toggle is pre-selected.
This means all your episodes will, by default, be presented in what they call “their remastered 16:9 widescreen format.”
If you want the original 4:3, toggle the button off.