Seeing black bars at the top and bottom of the iPhone X Simulator

Question

Running my App in the iPhone X Simulator (GM Seed) I am noticing two strange effects:

• the App does not use the full screen space (top and bottom area is black)

Answer 1

If you already have a 1125px × 2436px launch image but the app is still not using the full screen check to make sure that your image is PNG.