Game in French but texts in English

I’m taking the liberty of creating a new topic because I haven’t found any information elsewhere.
I’m French and I play AOE 4 in French. The voices and the menu and interface texts are in French but all the historical texts (history page, fun facts, etc.) are in English.
I love all the research and historical information, but it’s hard for me to fully understand the texts.
Does anyone know if this is a bug or if it’s normal ? Because I find it strange that everything is translated except these parts.
Thank you for your help.