Visual glitch in game mode

[acf98]

When trying the shader in an isolated project works great, but now i'm adding it to another project, and works correctly in the Scene window but with some strange problems in the game window.

Here's a video of the problem.

This game uses Cinemachine for the camera movement, but I don't think it should have any effect, as it only changes a camera position. Not really sure what the problem might be. Also, depth texture is activated.