how do i complete this alomally? i cant uncover it

https://reddit.com/link/1tb4a8c/video/9lzld2me1q0h1/player

https://preview.redd.it/1cc080cg1q0h1.png?width=1642&format=png&auto=webp&s=7ad72590e134b0c09928da389e0bbe7d3120fb1e

i have a hard time unlocking this, is this a glitch?