I can also duplicate this behaviour with the following card reader (from lsusb):
Bus 002 Device 004: ID 07cc:0301 Carry Computer Eng., Co., Ltd 6-in-1 Card Reader
It's part of the Mitsumi 404FA.
I can also duplicate this behaviour with the following card reader (from lsusb):
Bus 002 Device 004: ID 07cc:0301 Carry Computer Eng., Co., Ltd 6-in-1 Card Reader
It's part of the Mitsumi 404FA.