Reproduction steps:
1. Open the attached user's project "CustomRenderTexture.zip"
2. Switch the Platform to Android
3. There are two Scenes with two different Actual results and Expected results
4. Build Scene 1 to an Android device
5. Build Scene 2 to an Android device

Expected result: in Scene 1 the Astronaut texture is rendered on the Quad, in scene 2 a Cube is rendered
Actual result: in Scene 1 the Astronaut texture is not rendered on the Quad, in scene 2 a Cube is not rendered

Reproduces on: 2019.4.12f1, 2020.1.8f1, 2020.2.0a21
Does not reproduce on: 2020.2.0b1, 2020.2.0b7, 2021.1.0a1
Could not test on 2018.4 due to the project outputting PrecompiledAssemblyExceptions when attempting to Build to a device

Reproducible on Scene 1:
OpenGLES 2:
N/A, Samsung Galaxy S9 (SM-G960F), Android 8.0.0, CPU: Exynos 9 Series 9810, GPU: Mali-G72
N/A, Lge LG V50 ThinQ (LM-V500N), Android 10, CPU: Snapdragon 855 SM8150, GPU: Adreno (TM) 640

OpenGLES 3:
N/A, Samsung Galaxy S9 (SM-G960F), Android 8.0.0, CPU: Exynos 9 Series 9810, GPU: Mali-G72
N/A, Lge LG V50 ThinQ (LM-V500N), Android 10, CPU: Snapdragon 855 SM8150, GPU: Adreno (TM) 640
VLNQA00316, Samsung Galaxy Note10 (SM-N970F), Android 9, CPU: Exynos 9 Series 9825, GPU: Mali-G76

Vulkan:
N/A, Samsung Galaxy S9 (SM-G960F), Android 8.0.0, CPU: Exynos 9 Series 9810, GPU: Mali-G72
N/A, Lge LG V50 ThinQ (LM-V500N), Android 10, CPU: Snapdragon 855 SM8150, GPU: Adreno (TM) 640
VLNQA00316, Samsung Galaxy Note10 (SM-N970F), Android 9, CPU: Exynos 9 Series 9825, GPU: Mali-G76

Not reproducible on Scene 1:
OpenGLES 2:
VLNQA00316, Samsung Galaxy Note10 (SM-N970F), Android 9, CPU: Exynos 9 Series 9825, GPU: Mali-G76

Reproducible on Scene 2:
Vulkan:
N/A, Samsung Galaxy S9 (SM-G960F), Android 8.0.0, CPU: Exynos 9 Series 9810, GPU: Mali-G72
VLNQA00316, Samsung Galaxy Note10 (SM-N970F), Android 9, CPU: Exynos 9 Series 9825, GPU: Mali-G76

Not reproducible on Scene 2:
Vulkan:
N/A, Lge LG V50 ThinQ (LM-V500N), Android 10, CPU: Snapdragon 855 SM8150, GPU: Adreno (TM) 640

OpenGLES 2 and OpenGLES 3:
N/A, Samsung Galaxy S9 (SM-G960F), Android 8.0.0, CPU: Exynos 9 Series 9810, GPU: Mali-G72
VLNQA00316, Samsung Galaxy Note10 (SM-N970F), Android 9, CPU: Exynos 9 Series 9825, GPU: Mali-G76
N/A, Lge LG V50 ThinQ (LM-V500N), Android 10, CPU: Snapdragon 855 SM8150, GPU: Adreno (TM) 640

Notes:
-On Scene 2 only Vulkan Graphics API On Exynos devices are affected
-On 2020.2.0a21 with Vulkan the issue reproduces on Samsung Galaxy S9 and Samsung Galaxy Note10 with graphical artifacts or an App crash