How to reproduce (macOS):
1. Open the attached “IN-126622” project
2. Open the “SampleScene”
3. Make sure “Anti Aliasing (MSAA)” is set to “Disabled”
4. Enter Play mode

How to reproduce (Android):
1. Open the attached “IN-126622” project
2. In the App menus, navigate to Edit > Project Settings…
3. Select the Player tab
4. Make sure Vulkan Graphics API is at the top of the list for Android
5. Build and Run for Android

Reproducible with: 6000.0.1f1, 6000.0.64f1, 6000.3.1f1, 6000.4.0b1, 6000.5.0a3
Couldn’t test with: 2022.3.69f1, 6000.0.0f1 (Multiple namespace errors)

Reproducible on: macOS 26.1 (M1 Pro)
Not reproducible on: No other environments tested

Reproducible with these devices:
VLNQA00642 - Google Pixel 9a (Pixel 9a), CPU: Google Tensor G4, GPU: Mali-G715, OS: 15
VLNQA00041 - Samsung Galaxy S8 (SM-G950F), CPU: Exynos 9 Octa 8895, GPU: Mali-G71, OS: 9
VLNQA00480 - Samsung Galaxy S21 5G (SM-G991B), CPU: Exynos 2100, GPU: Mali-G78, OS: 11
VLNQA00632 - iPhone 16e (MD1Q4QN/A), CPU: t8140, OS: 18.3

Not reproducible with these devices:
VLNQA00472 - Samsung Galaxy A52 (SM-A525F), CPU: Snapdragon 720G (SM7125), GPU: Adreno 618, OS: 12
VLNQA00466 - Google Pixel 4 (Pixel 4), CPU: Snapdragon 855 SM8150, GPU: Adreno 640, OS: 12
VLNQA00375 - Galaxy S21 Plus 5G (SM-G996U), CPU: Snapdragon 888, GPU: Adreno 660, OS: 11
VLNQA00583 - Xiaomi Redmi 9A (M2006C3LG), CPU: MediaTek Helio G25 (MT6762G), GPU: PowerVR Rogue GE8320, OS: 11

Notes:
- Reproducible on macOS (Editor and Player) with MSAA disabled
- The issue reproduces on Android devices when using Vulkan API, does not reproduce on OpenGLES3 (regardless of MSAA setting)
- Errors thrown in the Editor can be disregarded, entering Play mode or changing any properties gets rid of said errors