Incorrect German translation
I have already submitted this issue in 15.3 prerelease branch, but I see it still uncorrected in 15.3 release.
Paragraph style -> popup menu:
the word "Nächstes" should be lowercase - "nächstes".
The issue has been fixed in the latest release of InDesign – InDesign 2021.
Please update to this new version of InDesign to get the fix.
Adobe InDesign team