Repro steps:
1. Open the attached project "repro_1330519"
2. Build and Run on Android

Expected: Shading at bottom of particles should look the same
Actual: Shading at bottom of particles is double the size

Reproducible with: 2019.4.24f1, 2020.3.4f1, 2021.1.5f1, 2021.2.0a14

Tested and reproduced on:
VLNQA00022, Xiaomi Redmi Note 3 (Redmi Note 3), Android 6.0.1, CPU: Snapdragon 617 MSM8952, GPU: Adreno (TM) 510
N/A, Google Pixel 3 XL (Pixel 3 XL), Android 11, CPU: NOT FOUND, GPU: Adreno (TM) 630
VLNQA00001, Google Pixel 2 (Pixel 2), Android 11, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540
N/A, BlackShark 3 (KLE-H0), Android 10, CPU: Qualcomm Klein (ARM64-v8), GPU: Andreno 650

Didn't reproduce on:
N/A, Huawei - (NOH-NX9), Android 10, CPU: NOT FOUND, GPU: Mali-G78
VLNQA00316, Samsung Galaxy Note10 (SM-N970F), Android 9, CPU: Exynos 9 Series 9825, GPU: Mali-G76
N/A, Samsung Galaxy S10 (SM-G975F), Android 10, CPU: Exynos 9820 (ARMv8), GPU: Mali-G76
N/A, Samsung Galaxy S9 (SM-G960F), Android 8, CPU: Exynos 9810 (ARMv8-A), GPU: Mali-G72

Notes:
- Couldn't test project on 2018.4
- Doesn't reproduce on Vulkan