Acid resistance affects damage from burb roots, but acid immunity does not
Damage from burb roots is reduced if the PC is acid resistant, but not if he's only immune to it.
Problem
Damage from burb roots is reduced if the PC is acid resistant, but not if he's only immune to it, even though logic would say immunity has to nullify damage completely.
How to reproduce it
Without having either intrinsic, equip an item that grants -Acid (e.g. ring of acid resistance) and eat some burb roots. Notice the lower damage and occasional message about having a strong stomach. Remove said item and equip one granting =Acid (e.g. black dragon scale mail). Note how you always take full damage.
Notes
N/A