Hey Christian, I took a look at the blend file, all seemed okay to me, but it MIGHT have something to do with the Alpha Over node, we think we may have found a bug with the Alpha Over node in helping another student, and there’s a slight chance that’s what’s happening here as well. I made a short video.
https://www.dropbox.com/scl/fi/idu21h6gx78te69uu2rel/ChristianPohrer_help_01.mp4?rlkey=8sw4n7vksaclmy6kco8wxxfqf&st=b2u172b3&dl=0
