Can't remember the last time I haven't had to show my ID to gate agent's when departing Spain, France (and BSL, which is effectively under French control), Poland or Italy.
BSL is extra special in that they were applying full border checks, operated by actual border agents, to a lot of Schengen departures (in fact, the area after the documentation checks was serving both Schengen and non-Schengen flights - which is why they were also asking for boarding passes since they need to know whether or not to apply a passport stamp to non-EU/EFTA persons).
And of course the random arrival checks, happening in e.g. Oslo to all arriving flights from Switzerland as far as I can see.