Upgrading from 2021.1 to 2021.3 URP shader looks good in viewport but shows color ramp ingame

Hello there, sorry if my title is a little bit confusing, I got back into gamedev after a very long time and I might not know all the right terminology. I had to upgrade my unity3d project for newer features, and I had a custom made dissolve 2D shader for a background.

Ingame, everything works well except for my custom dissolve shader that looks correct in the viewport but in-game just shows up as a color ramp split into 4 sections.

8793190--1195000--upload_2023-2-9_6-18-32.png

This is my shader graph :

If anyone has any idea as to how to fix this, I would greatly appreciate it. Thank you!

Could you try Position instead of screen position?

I tried switching , but it is still the same. Hmm

Maybe delete the library folder to reimport everything?
Otherwise I’m out of ideas. If you can reproduce it in a blank project make a bug report for it