This bug is triggered if you quit or die in the hallway before the Observatory. To avoid this, always finish the entire Observatory puzzle in one session and ensure no switches are active when you save.
The simplest fix is to completely close the game and restart it. Some players have reported that the gate will appear open upon the next boot-up. prince of persia forgotten sands door bug fix
To ensure you don't lose hours of progress, follow these best practices: This bug is triggered if you quit or
Higher frame rates can break the game's physics and trigger scripts. Use the NVIDIA Control Panel or AMD Software to lock the game to 60 FPS . Section-Specific Solutions prince of persia forgotten sands door bug fix