The Bug
When a player is inside powder snow blocks, their view is limited to about two blocks. When a player is inside powder snow blocks and they have the blindness status effect, their view is limited to the same range as the blindness effect.
Reproduce
1. Create a new superflat world in creative mode (survival also works as long as commands are enabled).
2. Place between two and four solid blocks like dirt between 0,0 and 15,15
3. /fill 0 4 0 15 5 15 minecraft:powder_snow replace air
4. Step into the powder snow -> field of view is limited to about 2 blocks
5. /effect give @p blindness -> field of view expands to the range of the blindness effect, when no change or a smaller field of view would be expected. The dirt blocks can be seen
Observed Behavior
The fog from powder snow isn't rendered when players have the blindness effect.
Expected Behavior
The fog from powder snow would be rendered when players have the blindness effect.
Attachments
Comments 15
Relates to MC-4647
Can confirm this behavior in 21w42a. Here are some extra details regarding this problem.
The Bug:
The fog from powder snow isn't rendered when players have the blindness effect.
Steps to Reproduce:
Build the setup as shown in the attachment below.
Stand on top of the diamond block and face in the direction of the emerald block, so that you're standing inside of the powder snow, making the fog from it visible.
Take note of how the fog from powder snow is rendered.
Give yourself the blindness effect.
/effect give @s minecraft:blindness 99 0
Take note as to whether or not the fog from powder snow is rendered when players have the blindness effect.
Observed Behavior:
The fog from powder snow isn't rendered when players have the blindness effect.
Expected Behavior:
The fog from powder snow would be rendered when players have the blindness effect.
I can confirm.