The best way to work around this bug I found in a forum:
Modify in /lib/udev/rules.d/80-udisks.rules the line 175 from KERNEL=="fd*", ENV{ID_DRIVE_FLOPPY}="1" to KERNEL=="fd*", ENV{ID_DRIVE_FLOPPY}="0"
After this, all mount methods are working. I don't understand the background, but I hope it is helpfully, for users and for debuggers.
The best way to work around this bug I found in a forum:
Modify in /lib/udev/ rules.d/ 80-udisks. rules the line 175 DRIVE_FLOPPY} ="1" DRIVE_FLOPPY} ="0"
from
KERNEL=="fd*", ENV{ID_
to
KERNEL=="fd*", ENV{ID_
After this, all mount methods are working. I don't understand the background, but I hope it is helpfully, for users and for debuggers.