I've noticed that Google Drive allows for duplicate file names in the same folder. In Boxcryptor Portable, when there are two or more files with the same name in a folder, only one is shown. This means you can access only one of the files: there others are hidden.
As we are supporting multiple providers we have to stick to the common behaviour to make this possible. This means if a file is duplicate it is ignored. This is a technical restriction and we cannot change it right now.
Thanks Boris. However, I would expect to receive a notification about a duplicate. Instead the file is overwritten with the new one so if I'm not extra careful I can overwrite data without even knowing. I hope there's an enhancement coming soon.