That's simply a side-effect of the way the game renders fog in a sphere around the player; In Java Edition (you have Bedrock Edition) a mod called "Optifine" has a setting to enable so-called "fast" fog (supposedly faster to render but I never saw any difference, even with fog turned off entirely):
Fancy fog (always used in vanilla regardless of the fast/fancy graphics setting):
Fast fog:
There's also a quirk with the the way older version of Java Edition render fog - they use an extension specific to NVIDIA GPUs to render "eye radial" fog so only those GPUs can render it, otherwise you get the "fast" fog shown above (the examples actually show this, MC-93243 but Optifine's fast/fancy fog acts the same way):
Is it just me or doesn't it make any sense?
For a pretty flat earthed game it isn't really flat earthed?
That's simply a side-effect of the way the game renders fog in a sphere around the player; In Java Edition (you have Bedrock Edition) a mod called "Optifine" has a setting to enable so-called "fast" fog (supposedly faster to render but I never saw any difference, even with fog turned off entirely):
Fancy fog (always used in vanilla regardless of the fast/fancy graphics setting):
Fast fog:
There's also a quirk with the the way older version of Java Edition render fog - they use an extension specific to NVIDIA GPUs to render "eye radial" fog so only those GPUs can render it, otherwise you get the "fast" fog shown above (the examples actually show this, MC-93243 but Optifine's fast/fancy fog acts the same way):
https://registry.khronos.org/OpenGL/extensions/NV/NV_fog_distance.txt
TheMasterCaver's First World - possibly the most caved-out world in Minecraft history - includes world download.
TheMasterCaver's World - my own version of Minecraft largely based on my views of how the game should have evolved since 1.6.4.
Why do I still play in 1.6.4?