WotLK scroll of deception BUGG

[Huss01]

i just used scroll of deception on my Lasherweave Robe and i lost the stats set on passive i tried to reverse but i only found out that i wasted another scroll pls give my Lasherweave passive back
the scroll of deception bugged my passive Set

[devyni9]

Don't worry, you didn't actually lose your set bonus. This is just a known client issue (visual bug).

[devyni9]

You can test it yourself if you have doubts. If you equip 2 or 4 out of 5 pieces of a set, you will still receive the set bonus even if your client displays otherwise, since the logic behind set bonuses is processed on the server side afaik.
That said, I would support the idea of Warmane patching our clients to fix this visual bug, as it causes confusion for many players, like in this example.