https://www.theregister.co.uk/2018/11/16/windows_10_update/

The 1809 build of Windows 10 and Windows Server is fast becoming infamous, after Redmond pulled it shortly after release when it started deleting people's files and stumbling in other ways. Redmond reissued the software on Tuesday, and today it's clear you shouldn't rush into deploying it, if installing it at all, in its present state.

Buried among the release notes for the re-released build is this little advisory, in which it admits: