Soft Shadows contain artifacts when the OpenGL Graphics API is used

Reproduction steps:

1. Open the attached “ShadowTest_16” project
2. In the Build Settings window, switch to the Android build target
3. Buld the Player
4. In the Player, observe the shadows for both spheres.

Expected results: Both shadows behave similarly and contain no artifacts
Actual Results: The soft shadows behave differently and contain visual artifacts

Reproducible with: 2021.3.22f1, 2021.3.38f1, 2022.1.24f1
Not reproducible with: 2021.3.21f1, 2022.3.30f1, 6000.0.3f1
Could not test with: versions lower than 2022.2.0a1 (Different build errors)

Reproducible environment: MacOS Sonoma 14.4.1 (Intel), Windows 10 (user’s)
Not reproducible environment: No other environment tested

Reproducible with these devices:
VLNQA00175, Samsung Galaxy Note9 (SM-N960F), Android 10, CPU: Exynos 9 (9810), GPU: Mali-G72
VLNQA00519, Google Pixel 4 (Pixel 4), Android 12, CPU: Snapdragon 855 SM8150, GPU: Adreno (TM) 640
VLNQA00146, Htc 10 (HTC 10), Android 8.0.0, CPU: Snapdragon 820 MSM8996, GPU: Adreno (TM) 530
VLNQA00372, Samsung SM-G991U (SM-G991U), Android 12, CPU: Snapdragon 888, GPU: Adreno (TM) 660

Not reproducible with these devices:
iPhone 12 Pro (iOS 14.2.1)
iPhone 13 Pro (iOS 16.6.1)

Could not test with these devices:
VLNQA00057, Htc One M9+ (HTC_M9pw), Android 6.0, CPU: MediaTek Helio X10 MT6795T, GPU: PowerVR Rogue G6200
(The Player screen is not rendered correctly)

Workaround: Use the Vulkan Graphics API

Notes:

• The issue is not reproducible on MacOS Buildtime (Metal), Runtime (OpenGL Core)
• The issue is not reproducible with hard shadows
• The issue is reproducible on MacOS Buildtime when launching the Editor with the -force-glcore command line argument