This simply isn't working.
I moved from Dropbox a few weeks ago, as I suddenly found that files, which I have always had stored locally on my MacBook Pro's hard-drive, were suddenly and randomly 'cloud-only' and had to be re-downloaded.
Unfortunately, I've been experiencing exactly the same issue with my 160GB of files which are now in OneDrive. I have checked the 'keep on this device' and as of yesterday, all 160GB of files were stored locally. There were no conflicting 'cloud' download icons and all seemed well. This morning, I now see a huge number of cloud download icons, randomly, across my folder structure when I open Finder and look in my OneDrive folder. Looking at my drive capacity, I see that I now have another 60GB freed up, suggesting that local copies have mysteriously vanished and gone to 'on demand'.
I am getting sick of this. OneDrive seemingly switches to files on demand mode without me making any changes or requesting it. Weirdly, you click on the OneDrive icon in the bar at the top, and it says that all my files are sync'd (clearly not the case).
Am I going to have to seek a refund and change my cloud storage provider AGAIN?
My data is too precious to entrust to your service currently, even though I make sure to keep regular backups. It is just unreliable.