The sky in the demon realm is not red as shown in the pictures on curseforge, and the demonic rifts are not generating in the dimension.

I do know that the Demon realm is a WIP but I just wanted to make sure it's on your radar

I'll look into the sky, that is sorta funky.
In the most recent version, demonic rifts do spawn, just underground. I updated the worn notebook to mention this.

will be fixed next beta

fixed in beta 5 I think