Twisting Shadow Debuff not showing up

During the Elerethe Renferal encounter, I am unable to track who was targeted by the Twisting Shadows debuff (id: 210850).
For example, this log shows that Twisting Shadows was cast at 1:38, but no one in the raid received the debuff. On other logs, for example this one, no one received the debuff at all throughout the entire fight.
Is this an issue with WoW’s combat log? Is there any way to track the characters that got the debuff then?

It’s WoW’s bug.