We have discovered that if you use mouse to change your difficulty mode, you will not trigger the confirmation prompt and directly change into standard mode.
Please do not touch the game mode option in setting if you're playing with a mouse right now.
We will try to fix the issue as soon as possible, we are really sorry about the issue!!
Bug caution
Build and release context
Recorded Steam release date:
Within one calendar day of this post (UTC). The listed date does not establish an exact launch time.