Make sure you are not opening a duplicate.

• I have searched the issue tracker and did not find an issue describing my bug.

Minecraft version.

1.21.6

Sodium Extra version.

0.6.4

Sodium version.

0.6.13

What happened?

Effectively, when you look afar with a lower view distance, you can still see fog, alongside the sky's discoloration from afar.

Evidence.

I spent some time this week rewriting the fog controls. You can now adjust fog settings per environment — including water, dimension/boss, atmospheric, lava, and more — with individual toggles, offsets, and other options.

See https://github.com/FlashyReese/sodium-extra/releases/tag/mc1.21.6-0.6.6

yeah, its most likely because of updating the fog
"With 1.21.6 we are also taking steps towards adding Vibrant Visuals to Java. In this release, there are new fog improvements and clouds will extend all the way to the horizon."

Do you have the way to fix it?

Can confirm this still happens in 0.6.5

I also realized that having the "multidimensional fog" active and removing the fog from the nether or the end, it will still be visible.
sorry for my english :c