Cover is not copied with send to external device

[DerDominik]

I copy my needed MP3-Files with "Send To" to my external device (USB and/or SD).
In configuration for this device I choose "put cover in music file", but it is not copied into the mp3-file (cover file exists in folder.jpg; is shown in MusicBee).
With choosing "Copy to folder.jpg" and saving, it is jumped back to "Don't copy cover" after looking again in settings.
"Copy into the same folder like music-file" is not choosable.

Would be nice, if this will be fixed :-)

I'm using MusicBee Portable v3.1.6590