The start time in Daily Tasks appears to be incorrect. Take a look at the picture below and note that I mine over 14k marble per hour
Given that the time supposedly reset nearly 5 hours ago, I have mined over 70k marble, not 12k. Either the start time is incorrect or there's an error in the calculation used - the amounts collected for both wine and marble are consistent with a start time of after 12:00 UK time (13:00 server time).