Strange effects of seasonal schedule on simulation results

I would like to know why the energy consumption results obtained when setting the analysis period to one year in a Seasonal Schedule, with all other parameters being the same, differ from those obtained using any other schedule with the same one-year cycle.
I’ve checked the output lists for both schedules using Panel and found them to be identical. The main difference is in the cooling results, with a slight difference in heating energy consumption.

single_family_energy_model_check (97.0 KB)
The GH file is attached here if you are interested.