Steps to reproduce:
1. Open Unity project in "New Unity Project.zip"
2. Inspect the scene:
Notice how the Scene looks in the editor (small orange plane centered in front of a bigger grey plane)
3. Build and run OpenGLES2 version of player on an iOS device
4. Inspect the scene on your device

Expected result: Scene is the same on the iOS device as in Editor
Actual result: Orange square is stretched to the left (view images attached)

Does not reproduce on Android (GLES2, GLES3, Vulkan) and iOS with Metal

Reproducible with: 2019.4.13f1
Not reproducible with 2018.4.29f1
Could not test with 2020.1, 2020.2, 2021.1 because OpenGL ES support is deprecated (also iOS 10 is deprecated)

Devices tested:
Reproducible with:
iPhone 5C (iOS 10.3.3)
iPad 4th Gen (unknown iOS)
Not reproducible with:
iPad Pro 12.9 1st gen (iOS 13.4.1)