I was affected by this, but I realized it at the time. I have an older laptop that I turned on. It was a work laptop a few years ago, linked to my dropbox acco

I was affected by this, but I realized it at the time. I have an older laptop that I turned on. It was a work laptop a few years ago, linked to my dropbox account, etc. Since then I had added a bunch of things like a bunch of git repos to a folder included in dropbox. I turned on that laptop and Dropbox started using 100% cpu after a few minutes. Then the fan kicked on and it was annoyingly loud so I looked at dropbox and saw it was chugging along in the repos directory. I went ahead and clicked on selective sync, unchecked repos, and left it alone for about 5 minutes. It was still 100% cpu, so I killed the dropbox task and restarted it. Minutes later, on another machine, I went to fetch from one of the repos and it had a gnarly error. So I went about investigating. I found my way to the dropbox events tab (on the website - the desktop client doesn't have this feature) and saw an event where dropbox decided to delete 7,800 files. I submitted a support request, but before they responded I had figured out it was (mostly) in the repos directory, which I fixed by simply deleting the repos and pulling from one of my servers. Anyways. There's my real world run in with this bug.