I ran 1809 on Oct 3 on my ASUS laptop - no problems.
That said, I’ve not noticed any differences vs prior version.
All of my Windows 10 computers have the 1809 upgrade, and I have no problems whatsoever.
I am a Windows Insider on a couple of boxes, so I get the fast ring updates, and those rarely cause problems, and are expected to be somewhat buggy.
Why people have issues with the well-tested semi-annual releases is something I just can’t figure out. I just don’t know. However, on the forums, people I trust have had issues with this one. Mostly, this problem (disappearing files on the update) seems to happen where there is very little free space left on the C:\ drive. I keep all of my files in OneDrive and Box, as I need access to them from anywhere, and it is a major convenience.