Current Build, Steam, Windows 11, Germans (revolution to Argentina)
So basically, I created a bunch of villagers a while after revolting by sending the “Citizenship” card, but their idle time was displayed as zero in the stats after the game ended. There’s no way I managed to assign all of them to a task immediately, for example a handfull was certainly idle when a patch of trees was used up.
In a nutshell, I suspect the game stops tracking that after revolting and converting your settlers, even though there are arguably multiple ways to get new eco units afterwards (said card, Cree, Oldenburg, treasures, …).