Steps to reproduce:
1. Download and open the attached project
2. Enter play mode
3.
-Press A for a direct instantiation (working)
-Press B to instantiate from an editor event (bug)
-Press C to instantiate from an editor event with a 1 frame delay (working)

Expected result: light intensity animation plays
Actual result: animation starts with the end frame due to being instantiated by an editor event.

Reproduced on: 5.2.3f1, 5.3.7p2, 5.4.3f1, 5.4.4f1, 5.5.0p3, 5.6.0b3