Yeah the first time was the time/date bug they had (still have?) where it set the time on every folder and file to 00/00/0000 00:00 across all clients and the server.
Second time was I disabled virtual file support on my laptop so it would sync everything, but instead it went and wiped all the files from the server, because for some reason their sync client assumed the laptop that now had no files on it should be the master source or something.
Their own docs even state that’s how you’re supposed to disable VFS, with no mention that it will wipe your server clean.