As talked here
The editor pregame, in gamepass version of the game (obtained from microsoft store), doesnt allow us to test our changes even when we dont edit the normal database.
It worked fine before the 22.2 patch (at least for me).
Steps To Reproduce:1- Rules -> add nation rules -> add lowers... -> any country
2- Convert to advanced rules, dont even edit the current database and save
3- Test rules and there it is the error