[saidajigumi]

iCloud sync (the pre-iCloud-drive incarnation) has been fraught with issues. A lot of folks in the iOS dev community have been griping (and writing really great blog posts) about this for some time now. There are times when iCloud just goes off the rails. For quite a while I'd been one of the "lucky" ones, but since then I've had to jump through workaround hoops to obliterate all of an app's iCloud data to fix syncing errors, seen things like two Macs on the same Apple ID that couldn't see each other's files and so on.

Imagine the furor if you could log into the same account from Dropbox in two different places and not see all of the same files.

AFAICT, the iCloud Drive revisions were essentially an acknowledgement that the first iCloud backend API and implementation was just a great big mess. Seems to be a huge case of overpromise and underdeliver, which sadly seems to be the banner motto of Apple's cloud offerings.