IHD calculations

I have the IHD6 in home display that shows the cost of the daily standing charge in the account information. As far as I can see the daily ‘cost so far’ doesn’t seem to include this as at the instant after midnight the cost so far shows £0.00 and just before midnight the figure does not suddenly jump by the standing charge. Is this yet another Bug?

The Chameleon website says that the IHD6 includes ambient temperature and sends data to their cloud server by wifi. Although they did reply to my queries they just referred me to my supplier which from indications on this community forum will be fruitless.