Yesterday I noticed a bug on X-S10. If you select Auto ISO and set as AF mode AF-C with object tracking, then the max. ISO value is shown in the EVF, not the real value selected by the camera, if you half press the shutter. If you switch to AF-S, then the displayed ISO value is correct.
As X-S10 user, do you observe the same behaviour, I would like to know. I installed the latest version (2.62) of the firmware.
Regards,
Mustafa