Stealthing should cause target loss and it does not. Last night i vanished 1k units away from a necro and his cast still wound up going off about a second later. If you get into stealth, all targets and abilities that are queued should be voided.
Recreate by Stealthing or vanishing while an enemy already started a cast. You still get hit.
Recreate by Stealthing or vanishing while an enemy already started a cast. You still get hit.