plasma "recent files" missing from "applications menu"

Hi *, for a few snapshots now the contents of "recent files" are missing from the plasma "applications menu", same for recent applications. There are a few folders and files in my home directory: /.local/share/recently-used.xbel ./.local/share/RecentDocuments but no entries from these fiolders/files are showing up in the menu. This is a Tumbleweed system with latest snapshots installed. Any idea? TIA. Bye. Michael.