You’ll notice a button I made at the top with the word “Wall” on it. The image doesn’t load properly it has some weird colouration problems on it. If you look closely parts of the top, side, and of the letters has a rainbow covering it. The other image below were loaded with the same functions and had no problem. Does anyone know why this is happening?
Backup your current code, then remove things little by little until the problem disappear. You will probably understand yourself how to fix it then. If it still puzzles you, post the simplest compilable code that still has the bug.