Question Isse with Post Processing

Hello, im using post processing with my camera, but some times it doesnt work and some time it does
how it should be (https://imgur.com/a/qDeYTeb) and how it becomes (https://imgur.com/a/eGGkn3K)
I saw the camera command buffer has post processing with < 1kb when it isnt used, while when it is used it has > 9kb
This is the camera settings when it doesnt work (https://imgur.com/a/J28JOdq) and this is when it works (https://imgur.com/a/EfbvpPP)

 

I wonder if this is a bug?

 

fixed it , i miss-setup an optimization script, which affected the post-processing volume, now it works like charm