devkit-disks seems to detect it as non-internal just fine:
Showing information for /org/freedesktop/DeviceKit/Disks/devices/sdb1
system internal: 0
Can you please expand the "details" section of that authentication dialog and either copy&paste the text from there or make a screenshot? Does it really ask for the org.freedesktop.devicekit.disks.filesystem-mount-system-internal privilege?
devkit-disks seems to detect it as non-internal just fine:
Showing information for /org/freedeskto p/DeviceKit/ Disks/devices/ sdb1
system internal: 0
Can you please expand the "details" section of that authentication dialog and either copy&paste the text from there or make a screenshot? Does it really ask for the org.freedesktop .devicekit. disks.filesyste m-mount- system- internal privilege?