The bug
The glowing armor around charged creepers does not fade into the fog correctly, remaining visible through it unlike other objects.
How to reproduce
Get a charged creeper
View it from a distance
Decrease your render distance
Expected results
It would be completely obscured by fog.
Actual results
The surrounding armour remains clearly visible.
Linked issues
relates to 6
MC-279052
Wither armor is not affected by fog correctly
Open
MC-152382
End gateways and end portals don't fade away with render distance fog
Resolved
MC-223566
The world border is not affected by the fog from powder snow, lava, water, or the blindness and darkness effects
Open
MC-248682
Translucent blocks moved by pistons aren't affected by fog correctly
Resolved
MC-248688
Falling translucent blocks aren't affected by fog correctly
Resolved
1 more links
Can confirm.