The rename issue is already solved and in the process of being rolled out across all the clients. Our original implementation of renaming for Sync was naive and

The rename issue is already solved and in the process of being rolled out across all the clients. Our original implementation of renaming for Sync was naive and slow. This was especially noticeable if you renamed a folder with lots of files. It would first delete the remote file on the Sync server and re-upload the local file to the new path. If you did this with a whole folder it meant waiting for all the remote files be deleted and then reuploaded. It's safe, just slow. Now we're tracking renames which is much better in every way :)