I use windows on many systems and have no such problems. What was introduced into the latest update is what is added into storage sense - if you enable storage

I use windows on many systems and have no such problems. What was introduced into the latest update is what is added into storage sense - if you enable storage sense integration into OneDrive then when you are low on disk space, documents are MOVED to one drive (offline). You DO have to opt into this. Other people who have this problem with missing docs apparently have done registry hacks and sub mounted volumes to fake onedrive access to USB devices or to move things around in ways that were never supported - OneDrive has always attempted to block/disable such hacks but people are creative... i have 0 sympathies for those users - but again - their docs are probably still on the umounted volume they could re-mount (assign a drive letter) or they're fully migrated to OneDrive.