Reproduction steps:
1. Open the attached project "ReproProj"
2. Switch to Android Platform
3. In XR Plug-in Management, observe that Plug-in Provider is set to Oculus (Edit > Project Settings > XR Plug-in Management)
4. In Player Settings, observe that Graphics API is set to Vulkan (Edit > Project Settings > Player Settings)
5. Build and Run the “_Complete-Game/-Complete-Game“ Scene on Quest
6. In Player, press X to lower the render scale

Expected result: No distortion exists
Actual result: Distortions in the top half of the screen are visible

Reproducible with: 68.0.2 (6000.0.22f1)
Could not test with: 68.0.2 (2021.3.44f1, 2022.3.50f1) (Shader error in 'Hidden/Post FX/Fog': undeclared identifier 'sampler_CameraDepthTexture' at line 67 (on vulkan)))

Reproducible on:
VLNQA00379, Oculus (Quest 2), Android 10, CPU: Snapdragon XR2, GPU: Adreno (TM) 650

Not reproducible on:
Play Mode
Windows Standalone Player

Testing environment: Windows 10 Enterprise 21H2
Not reproducible on: No other environment tested

Notes:
- Build sometimes fails with “Shader error in 'Hidden/Post FX/Ambient Occlusion': undeclared identifier 'sampler_CameraDepthTexture' at Assets/PostProcessing/Resources/Shaders/AmbientOcclusion.cginc(110) (on vulkan)“
- Does not reproduce with OpenGLES3