Enemies no longer aggro for rest of map (Ref: 2627445867)

Reference ID: 2627445867

Bug: Gem 'Behead' makes enemies no longer aggro when obtaining 'Shroudwalker' and the ability steal timer has also expired.

Replication:
1) Have Gem 'Behead'
2) Find & Kill Rare with 'ShroudWalker'
3) Have ability
4) Ability has a chance to persist after 20s timer has expired



Notes
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- This may not be a 100% success rate, however it has happened often enough in the past day that several maps I have been invulnerable from aggro (non-agro AOE still hits ect)

- This seems to also happen with other abilities, for example when taking abilities that give you fire orbs, the orbs can persist (but don't seem to trigger after the timer has expired)