Description of Bug Experienced:
The +5 whip Spider Queen's Wrath says, under its Special Properties, "Spell Immunity: Web". Having tested this on the live servers with two different drow and having used web as a wild magic surge, as a scroll and as an actual spell on at least one of them, in no case was the drow immune to the spell, and it still required them to roll a reflex check, immobilizing them if they failed.
Steps to reproduce the Bug:
Equip Spider Queen's Wrath. Cast web on the floor. Stay in the web or walk through it.
Expected Result:
No reflex checks would be required and you would be immune to the spell.
Actual Result:
You roll a reflex check and get stuck in the webs on a failure (and nothing happens if you pass the reflex check of course). The same behavior as if you didn't equip the item.
Screenshot(s)
https://imgur.com/a/LczZshg
Additional Information/Notes
Now obviously this isn't a very important bug, might even be a completely deprecated feature left in a description for a rare item that has been beneath notice for a long time. But in case it isn't, here's the report! (Also it'd open up a really niche but fun interaction of drow/evil elves/UMD power-users just throwing webs everywhere!)