If Modelica overrides a time schedule or an actuator at a time instant that does not
coincide with an EnergyPlus time step, the change in value may be ignored for the heat balance
of the current EnergyPlus time step.
This will be addressed through
issue 2000.
If a simulation starts at a time smaller than 0, then an error will be issued and
the simulation won't start.
This will be addressed through
issue 1938.