No, is not solve my problem.
I sometimes reloading (when "reloading" i mean exit from game and load save file) for a testing a few things, but in theory other achievements is can activate without Ironman.
I always play with Ironman, but playing without ironman neither achievements is poping up to.
But... if no reloading, how you play for long time achievements? Like "Play until the End"? Playing one playrun for 125 hours without turn off the console? I play on Xbox One, via Game Pass Cloud, and if i play more than 10-15 hours, the console says: "F...off", and show me: "Disconected from a game session in the cloud"... and this thing takes me out from the game and blocks achievements and i need start a new game.
You get my same idea. You get a child with trait, with parents without any trait. But the achievement is not poping for you, right?
You play this in one play run with no exits and loads?
Is a first posible problem what i'm thinking.
The second, is because this achievement (and "Knowledge is power", actualy, you get it in May of 2023, in your first play) is not showing in CK3 Wiki. I thinking this two achievements is too old, and one day, when consoles version is updating, this achiev desappear.
I checked players, on Xbox, who had this achievement, and all of them had it in 2022 or in beginning of 2023... i sure, this achievement has been blocked in the same time, or 1 or 2 months before, when did you start playing this game.
My condolences. This game is the most frustraiting thing on the Earth.
But only for that, for trying all ways, the developers should unlock this achievement for you and must give you a Gold Edition of the game with all DLC for free