Expected: Seeing something while blind in a cave as a caverndweller ranger. I thought exits would be visible at least. Maybe other creatures or just PCs shown as "Someone"?

Actual:
Fulstil utters the words, 'noselacri'.
Your eyes roll back, and a viscid haze fouls your eyes, bringing darkness.
Someone is covered with bleeding wounds.

<90%/590hp 46%m 100%mv 4934tnl fighting wilderness CAVE indoor/none 6 PM>
Your defensive spin deflects someone's claw.
Your thrust DISMEMBERS someone!
Someone parries your thrust.
Something glows a soft green in your hands.
You feel better!
Someone is covered with bleeding wounds.

*snip rest of the fight*

<87%/590hp 19%m 100%mv 4794tnl standing wilderness CAVE indoor/none 7 PM> af

You are affected by:
Skill: 'warcry' modifies save vs spell by -8 for 40 hours.
Skill: 'warcry' modifies hit roll by 4 for 40 hours.
Skill: 'acute vision' for 31 hours.
Skill: 'bark skin' modifies armor class by -52 for 24 hours.
Spell: 'armor' modifies armor class by -20 for 21 hours.
Skill: 'protection heat cold' modifies cold resistance by 25 for 21 hours.
Skill: 'protection heat cold' modifies fire resistance by 25 for 21 hours.
Power: 'windwalk' for 18 hours.
Power: 'windwalk' for 18 hours.
Spell: 'blindness' modifies hit roll by -4 for 8 hours.
Power: 'harmony' modifies wisdom by 1 for 6 hours.
Power: 'unbound spirit' modifies wisdom by 2 for -1 hours.
Power: 'unbound spirit' modifies morale by 10 for -1 hours.

<87%/590hp 19%m 100%mv 4794tnl standing wilderness CAVE indoor/none 7 PM> l
You can't see a thing!

<90%/590hp 22%m 100%mv 4794tnl standing wilderness CAVE indoor/none 8 PM> e
You aren't calm enough to creep.
You step out from your cover.
You can't see a thing!

<90%/590hp 22%m 99%mv 4794tnl standing wilderness CAVE indoor/none 8 PM> w
You can't see a thing!

Steps to reproduce:
Be a caverndweller ranger. Go to a cave. Get blind. ?

Repro rate: 100/100; it happened constantly getting dirted by prisoners in the (cave) prison in the arial city, and this excerpt of getting the blindness spell from a Talshidar in those caves.

Caverndwellers will now properly see a bit when blind in caves.