Nothing seems out of place. Keep track of the total hash at the top.
If the total hash at the top changes even slightly, then data is updating.
If the miner is showing a hashing number and the number is changing (after a few minutes) then that is what is collected via the api.
You can cross reference by visiting:
https://www.kano.is/index.php?k=api&username={username}&api={apikey}&json=y&work=yThere is a possibility that the device is bouncing and it may show up when idle because there is some avg involved.
But if it's completely off-line for a long period, there's no reason for it to hang around in the hashing screen.