Reproduction steps:
1. Open the attached "IN-97465" project
2. Open the “MainScene” Scene
3. In the Hierarchy window expand the “==== MANAGERS ====” GameObject
4. Select the “Game Manager” GameObject
5. In the Inspector window “Spawn Characters” script component change the “Num Characters To Spawn” property value to 3
6. Build and run the project
7. In the built project click “Start”
8. Observe the console in the built projects bottom left corner

Expected result: No errors are logged
Actual result: “_mainTex” is expected error is logged

Reproducible with: 2022.3.7f1, 2022.3.61f1, 6000.0.48f1, 6000.1.0f1, 6000.2.0a10
Could not test with: 2022.1.0a1, 2022.2.0a2 (Multiple method not found errors)

Reproducible on: Windows 11, macOS 10.15 (Intel) (User)
Not reproducible on: No other environments tested