Probably late, but in the main menu, go to game Library. Hover over the game, press Options button and select Information - there, it shows you Download Status, and should say if the whole 150.7 GB game has fully downloaded or not.
Caution: Sleep Mode stops it from downloading, so the console has to be on at all times for the game to download.
Hope this helps others when they buy the game in the future.
Thank you for this. I didn’t realize the game didn’t fully download overnight so spent 45 min looking for this phantom patch before I saw this post about the game not being completed.
