Hey!
Chiming in to let you know you are correct! This is a long lasting and annoying bug! It’s not just unceasing chain link. While that is the top offender, several others disappear as well.
It was reported back in December in this thread: Torghast, Unceasing chain link anima
They have “Passed it on” on Twitter, and so far no fix has happened.
I encourage you to also post in that thread to help build to show this is a problem and report it in game (Linking back to that thread if you wish) as well!