This has probably been an issue for way longer in the game, but the new nether biomes really exaggerate this effect. Quite jarring and offputting, there should be a smoother transition.
Linked issues
Attachments
Comments 1
MC-170839
Fog and sky colour changes abruptly when changing biomes
Resolved
Duplicate
1
muzikbike
(Unassigned)
Confirmed
Rendering
20w06a
Retrieved
You're right, this was an issue before as well - See MC-132390. With the new update it's way more obvious though.