How to reproduce:
1. Open the "SampleScene" Scene in the attached "HDRP v3.zip" Project
2. Set Active the Spot Light(BAD) GameObject
3. Deactivate the Spot Light(BAD) GameObject
4. Observe the Reflection color on the GameObjects in the Scene

Expected Behavior: The Reflection color is set back to white as the Blue Spotlight is deactivated
Actual Behavior: The Reflection color is still the color of a Spotlight even when the Spotlight is deactivated

Reproducible with(Unity versions): 2019.1.0b9, 2019.2.0a10
Reproducible with(Package versions): 5.10.0, 5.9.0

Not reproducible with(Package versions): 4.10.0
Not Reproducible with(Unity versions): 2018.3 stream

Note: Could not test on earlier than 2019.1.0b8 and 2019.2.0a9 as the HDRP had missing namespace errors in this project.