[2021] One little question

If you mean one of your family shared and the other bought the game... Steam explains themselves you don't get to keep DLC content. Okay, technically you do - your progress is saved, but you have to rebuy the DLCs to access the content.

https://store.steampowered.com/promotion/familysharing Read this.

Originally posted by ★Puccho×: Ah thank you a lot !! now i understand it !^^

No problem! :)