Well after few days... I'm posting a couple of caps because I'm not sure if the theme does not load for me or it is really as empty as it seems... (In the later case... is there a way to go back to Royal theme?)
The VISION theme is meant to appear like that, it is its full form along with the other newly introduced themes which have similar layouts but in dark.
You can change back to the default/original Royal Hallyu theme by selecting it from the options at the bottom:
Take into consideration that it will be available for less than two weeks only.
After that time period, the Royal Hallyu themes will be removed and the VISION themes will stay.