Exit kill triggers seem to fire as soon as the particles are created.

Repro steps.
1. Open Triggers scene from attached project.
2. Press play.
3. Observe how particle marked as Exit gets killed off right away.

Expected outcome: exit particles to get killed off where the red arrow is (i.e. upon exiting the trigger)

Notes:
- Not a regression, happens since the introduction of triggers.
- Exit callbacks on the other hand work as expected and are only called once the particle exits the trigger.