You can hear the sound of the goat horn very far away

This is most likely intended.
— Use the horn to play a loud sound that can be heard from afar - 22w17a changelog

Realtes to MC-250949

I can confirm this behavior, though the changelog specifically stated this as seen above in the comment by @unknown.

I don't think thats "can be heard from afar" is a more then million blocks.

You'd expect that the sound would fade after moving away from a certain high distance, but not to keep playing from an unreasonable amount of blocks away the source.

I recomment going to the feedback page of minecraft instead. They added this feature on purpose.

This is rather a bug than intentional.

@Jolan van Hoof and @Caledonite Mojang have given this bug report a Mojang Prioroty, which means that they consider it a bug.

Relates to MC-57057 and MC-249410.

goat horn sounds follow the player