It is possible that you didn’t have problems but it has a huge potential for that. WINE uses Linux symlinks and that’s the main reason why it’s not a good idea using NTFS for that, since when you boot Windows it’ll correct those files because Windows and Linux have different case-sensitivity. Basically Windows will corrupt those files and you will have problems regarding that. If you don’t boot into Windows you probably won’t have problems though. On the other hand if you don’t boot into Windows, why use NTFS. :)