Is the 3-month thing actually enforced in Norway on those who do not cause a nuisance or seek benefits? Not only is it rarely enforced in EU countries, but I va

Is the 3-month thing actually enforced in Norway on those who do not cause a nuisance or seek benefits? Not only is it rarely enforced in EU countries, but I vaguely recall hearing that there have been court judgements in some country or another that EU/EEA citizens who overstay there cannot be forced to leave.