I’m not sure is it a bug or a feature but the Wraith AI could use some improvement.
I have invested in the “Locus of Resurrection” node and indeed I can summon a Wraith at the mouse arrow location, that’s perfectly fine. What happens right after the summoning doesn’t make sense to me - instead of attacking the nearest enemy the Wraith runs straight to my character and only afterwards it looks for the enemy.
The whole benefit of having a short-living minion type is to use it as a blocker / attacker at a desired location, instantly. This travel there-and-back when summoned makes Wraiths far less useful than they could be.
Cheers!