Using ILI9488

Please post a link to your actual display shield. Make sure that the photos match your device.
Or post a photo of the item on your desk.

UTFT has three 320x480 controllers. Try each constructor. Take notes about each problem.
e.g. UTFT_Demo_480x320.ino sketch

UTFT myGLCD(ILI9481, 38, 39, 40, 41);
UTFT myGLCD(ILI9486, 38, 39, 40, 41);
UTFT myGLCD(R61581, 38, 39, 40, 41);

Please do NOT use gobbledygook "model" names like CTE40. If you want help, you can at least use the proper controller names.

MCUFRIEND_kbv supports eleven different 320x480 controllers
TFT_HX8357 supports several different 320x480 controllers.

David.