Hey BathTub,
I’m not quite sure what you are trying to show in that screenshot. By Chains do you mean the ability, the effect, or the chains that wrap around Kel’thuzad?
If you are referring to the ones that are around the Hero, would you mind forwarding a replay along so I can see what happened to you when you completed the quest, as that is most likely the cause for them not showing normally.
You can do that by following the Bug Attachment Guidelines pinned post