The UI is progressively eroded/glitched by Penny as part of the story, so this may not necessarily be a bug.
Can you provide a screenshot of the UI not loading in?
(Still machine translated) Sure. But I actually LOAD as soon as I encountered the first option in the opening scene, before I even met penny ...... My first half of the game screen pretty much looks like this, then I encounter the CG quality cutback screen UI later on and it comes back. I was completely afraid to LOAD for the second half of the game because of this.