Repro steps:
1. Open user attached project 'AR URP Overlay Issue - iOS 2020'
2. Build and Run on iOS
3. Move the device to see the cube
4. Press the "Overlay On" button

Actual: The cube disappears
Expected: The cube doesn't disappear and is seen along with the spawned circle

Reproducible with: 2020.2.2f1 - URP 10.2.2 - AR 4.1.3, 2021.1.0b4 - URP 11.0.0 - AR 4.1.3, Couldn't build project on 2021.2
Not reproducible with: 2020.1.17f1 - URP 9.0.0 - AR 4.1.3

Tested and reproduced on:
iPhone 11 (iOS 14.5)

Didn't reproduce on:
VLNQA00001, Google Pixel 2 (Pixel 2), Android 11, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540
VLNQA00231, Huawei HUAWEI Mate 20 Pro (LYA-L29), Android 9, CPU: HiSilicon Kirin 980, GPU: Mali-G76
----------, Oneplus OnePlus 6 (ONEPLUS A6003), Android 10, CPU: Snapdragon 845 SDM845, GPU: Adreno (TM) 630