Chilled food processing environments often suffer excessive icing of cooling evaporators if not turned off during end of production wash down which is often done with steaming hot water. Its an extreme example yes, but demonstrates what can happen when conditions exceed normal.
Modern inverter AC's monitor the evaporator coil temperature and will reduce output based on load, length of time running and fan speed. The anti icing parameters set in software would likely not handle unusual situations where room humidity is being held high.
AC's equipped with humidity sensing can better avoid coil icing.
If refrigerant levels are correct, filters clean, coil fins clear, fan clean and operating correctly, it is still possible for the evaporator to ice over if environmental conditions are outside those what the AC was designed to work with.