"Loading resource pack" and "Generating World" text is no longer displayed when entering a World

When you enter a world, before 1.20.70.20 Beta/Preview "Loading resource pack" and "Generating World" text would appear in the screen header area (above the Loading Tips box), but now it doesn't appear anymore

Steps To Reproduce:
1. Enter any World

Expected results:
"Loading resource pack" and "Generating World" text will appear in the screen header area

Observed Results:
"Loading resource pack" and "Generating World" text does not appear in the screen header area

Note: This only affect when entering a World, the screen header text show normally when joining a Server, when changing dimension, or when saving the world