NFL will look at the fumble-out-of-end-zone rule

faceman said
The ball never had to touch the ground to be a touchdown. All it ever had to do was break the plane
where the white stripe began. It never had to make it to the green area of the end zone.

Ackshually, originally you had to touch the ball down in the end zone to score a touchdown in gridiron football.

The rule was changed in the late 1800s.

https://archive.org/details/anatomyofgamef00nels/mode/2up?q=touchdownpp.55-56