The barbarian class perk Mad Berserker is listed as follows:
"+8 STR, -4 WIS, -4 AC, Immunity:Fear, blindness, +1d4 Bludgeon Damage, +10% movement speed
Duration: 7 rounds + CON mod before raging."
Yet I noticed it actually blinds the character for the duration of the rage, which is a rather odd way of being immune. Considering blind is one of the most brutal conditions a melee character can have, shutting down both offense and defense in major ways, I can only think something went awry.
Nowhere does it claim you are given immunity to blindness. It actually reads blindness listed. For the same reason there is no immunity to +1d4 bludgeon damage and immunity to +10% movement speed. Fully intentional.
Ah, I suppose I assumed based on where the status was placed and how impracticable it sounded otherwise. Sorry!