How to reproduce:
1. Open the attached project ("SRFBugReport.zip")
2. Build And Run on an iOS device

Expected result: "SimpleYellowMat" Material is rendered, no visual artifacts are visible
Actual result: "SimpleYellowMat" Material is not rendered, visual artifacts are visible

Reproducible with: 10.6.0, 10.7.0 (2020.3.21f1)
Not reproducible with: 11.0.0 (2021.1.26f1, 2021.1.27f1), 12.1.0 (2021.2.1f1), 13.1.0 (2022.1.0a13)
Could not test with: 2019.4.32f1 (Various issues caused by downgrading, assets serialized with newer versions fail to deserialize)

Reproducible on:
iPhone 13 mini (iOS 15)
iPhone 8 Plus (iOS 14.4.2)
iPad Air 2 (iOS 11.0.3)

Not reproducible on:
VLNQA00288, Samsung Galaxy J7 (SM-J730F), Android 8.1.0, CPU: Exynos 7 Octa 7870, GPU: Mali-T830
VLNQA00022, Xiaomi Redmi Note 3 (Redmi Note 3), Android 6.0.1, CPU: Snapdragon 617 MSM8952, GPU: Adreno (TM) 510
VLNQA00001, Google Pixel 2 (Pixel 2), Android 11, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540
VLNQA00316, Samsung Galaxy Note10 (SM-N970F), Android 9, CPU: Exynos 9 Series 9825, GPU: Mali-G76
VLNQA00225, Qualcomm null (SDM845 for arm64), Android 8.1.0, CPU: Snapdragon 845 SDM845, GPU: Adreno (TM) 630