To reproduce:

1. Download project "NewWorld3.rar" that user sent and open in Unity
2. Open "Scene1" scene
3. Enter Play mode
Note: Observe that all objects in Game window have textures on them
4. Exit Play mode and Build project
5. Run the Build

Expected Result: Like in Editor all objects will have textures on them
Actual Result: Not like in Editor, all object will be white

Note:
- This issue appears only on Built project
- "Graphics.CopyTexture" is in "TextureAtlas.cs"
- Workaround of this issue: If you check "Read/Write" on textures, then everything will work on both Editor and Build

Reproduced on Unity 5.5.4p4, 5.6.3p3, 2017.1.1p1, 2017.2.0b11 and 2017.3.0a7