Today I noticed that the setpoint of one of my Heatit Z-TRM2fx thermostats was still at the level which was set when I activated holiday mode a week and a half ago. Every morning when I set home mode this should have been set back to the normal temperature, so the system has had plenty of chances to correct the error.
This happens from time to time, and with random thermostats. I think the logic governing this should be improved. The smarthub needs to be able to double check with the thermostats that the correct temperature has been set (and not just thermostats, for that matter, but all devices).