hi there! first of all thank you so much for checking out the game, i'm glad you're enjoying it so far and i'm sorry to hear that you've been having trouble!
so after some investigation of what might be causing this issue, i think i figured out what's happening: the player is already transported to the chase map and is able to move around even when the screen is still faded to black.
here's the solution i can offer: the chase doesn't actually start until you take 3-4 steps to the front so to avoid having to run blindly you are allowed to wait/stand still on the spot without having to do anything until the screen is shown again! so don't press any movement keys and wait until the map is visible- and once the screen's back that's when you can start your chase!
hope this helped and once again thank you for dropping by and letting me know !!