Nitrokey Storage : Unencrypted volume mounted twice when unlocking encrypted volume

Hello,

Using libNitrokey in my own application, when my application tries to unlock the encrypted volume, I regularly have the unencrypted volume mounted twice instead of the encrypted volume…

I have the same problem on Windows and on Linux.

Does anyone already had this problem with Nitrokey Storage using libNitrokey ?
Is it a known bug ?
Any bugfix ?

Thanks,

Cyrille