Thank you both for your help!
The result is, that it’s not sorting by date and I’m also able to sort them manually in the panel.
It also does not work when I move the sortBy up like this:
sections:
subpages:
label: Neuigkeiten
type: pages
layout: table
sortBy: zeitpunkt desc
columns:
category: true
zeitpunkt: true
template:
- neuigkeit
Do you have any other idea?
btw: “zeitpunkt” gets successfully pulled because in the table overview, I can see that it shows this field inside every column…