Reproduction steps:
1. Create a new project
2. Import the attached "NewUnlitShader.shader" Shader
3. Select the "NewUnlitShader.shader" Shader
4. In the Inspector view click on the "Compile and show code" button
5. In the opened Code Editor scroll down
6. Observe the variable to which any "texture" call is assigned

Expected result: The variable name is "u_xlat16_N"
Actual result: The variable name is "u_xlat0"

Reproducible with: 2019.4.33f1, 2020.3.24f1, 2021.2.5f1, 2022.1.0a16

Notes:
- Couldn't test with Vulkan and Direct3D11 Graphics APIs (the script doesn't have variables "u_xlat16_N" or "u_xlat0")
- Reproduced with OpenGLCore and OpenGLes3 Graphics APIs