Some bugs appear to be affecting Augmentation Evoker on the Patch 10.2 launch, especially in Mythic+ content!
Edit: This now appears to be fixed.
As posted in the Wyrmrest Temple discord, players have discovered that Augmentation Evoker has some weird bugs!
Larias in the Wyrmrest Temple discord for Augmentation Evokers posted the following.
Without the Close as Clutchmates buff and the Aberrus 4 set bonus, this means that Augmentation Evokers are significantly weaker in Mythic+ at the moment than last week, when combining both the nerfs and these bugs. However of course, Augmentation Evoker still buffs your healer and tank so it's still a very good choice for Mythic+ content!