In Temple of the Jade Serpent, Sha of Doubt goes invulnerable while channeling Bounds of Reality. But he's still targetable.
"Well, don't be stupid, target the adds". Yes, yes. I know. The problem is that groups like to drag all the adds to the middle of the room for some reason, meaning you're constantly clicking a giant transparent Sha while trying to target adds.
The reason I bring this up is because it's not really an issue of fight mechanics — it's easy to figure, "Don't hit boss now" — but a logistical / UI issue where a giant translucent boss blob obstructs everything that's going on. I think that's unnecessarily frustrating.
So, please, when this goes Live shortly consider making the Sha of Doubt completely unable to be interacted with during Bounds of Reality.
Lives will be saved. Tears of joy will be shed. No one will ever know the sacrifices made to bring them a less annoying Sha, but I'll be happier. ^^