To reproduce:
1. Open the "LinearColorSpacePostProcessing.zip"
2. Build and Run the "SampleScene" scene on Android

Expected: The image has a washed-up effect
Actual: The image has no effects

Reproduced with(Unity Versions): 2019.4.3f1, 2020.1.0b14, 2020.2.0a17
Reproduced with(Package versions): 8.1.0

Repro Devices:

OpenGL3 and Vulkan:
VLNQA00015, Samsung Galaxy Note8 (SM-N950W), Android 8.0.0, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540
VLNQA00286, Meizu - (PRO 5), Android 7.0, CPU: Exynos 7 Octa 7420, GPU: Mali-T760

No Repro Devices:

OpenGL3:
VLNQA00285, Samsung Galaxy J4 Core (SM-J410F), Android 8.1.0, CPU: Snapdragon 425 MSM8917, GPU: Adreno (TM) 308

Note: Expected and Actual Screenshots provided in the edits