Automatic file downloads of online-only files

I’m not sure which genius thought of the Windows Setting for Automatic file downloads, but it appears to have lost its mind on my Surface Pro. Some download agent of OneDrive appears, entirely on its own, to have decided that I need several gig of old photos to be downloaded continuously to my local drive — even though I have the files set to be online only to save space. If I leave my Surface unattended, this little service runs that starts downloading like crazy. I select “Block App” and it stops….but it will restart on its own after a period of time (perhaps a couple hours). By the end of each day, my Surface has 0 bytes available on the C: drive. Windows really loves having 0 bytes available on the system drive. So I select all these ancient photos, right click, and select “Free up space” to make them “cloud only” and I get all my space back. Until the little download agent runs again. This all started in the last couple of weeks. I never saw this “feature” before then. Hopefully it’s a bug in my “Insider Build” and it will be fixed. Otherwise, it might be time for a nice fresh install.

Has anyone else encountered this issue?