The bug
The page https://www.minecraft.net/de-de/msaprofile/mygames/editskin (requires authentication) is not completely translated:
Under cape selection: "No cape"
Additionally the link for "Check out this help article for more information" just links to the main help page.
Update (06/19/2022)
This page moved to a new url: https://www.minecraft.net/de-de/msaprofile/mygames/editskin
Model names have been fixed in both places.
Cape selection still says "No cape"