https://www.vice.com/en_us/article/kz4jkz/the-simpsons-on-disney-has-a-bad-aspect-ratio

I wasn’t planning on subscribing to Disney+, Disney’s new streaming service, until I heard it was going to be the new home for The Simpsons. I suspect I’m not alone: fans of the show have waited years for it to appear on a streaming service, and Disney+ was clearly flexing on the competition by offering the show. So, when Disney announced Bart, Maggie, Homer, and Lisa were coming to Disney+, I sighed and signed up.

Unfortunately, Disney fucked it up, and The Simpsons I knew from my childhood isn’t the The Simpsons that Disney+ is showing. The classic episodes originally aired in a 4:3 format, which fit televisions in the pre-HD era. Disney+ is showing reformatted HD episodes in a widescreen 16:9 ratio. The images fill up a modern TV screen, but they’re cropped and stretched. As fans have noticed, the crop can cut sight gags from the Disney+ release.