Currently the new experience OneDrive for Business (onedrive.exe) is unable to sync Sharepoint libraries, only Onedrive libraries, however there is an option in the admin center (Functionality of the Sync button) to use it for syncing. This is confusing!!

At the very least, grey out the options that aren't functional yet or update the explanation to make it clear that this is currently a OneDrive feature and not a Sharepoint feature.