Text field not showing up on customize with WPML

Hi, I have a little issue here. When I go to settings > Design > Go to design now, I can change the text of the English version but when I switch to another language (French, with WPML), there is no text field anymore. I’ve tried to go directly from Admin > Appearance > Customize, but the problem is the same.

I have no clue where the problem could come from. Any idea?

Thanks.

Pierre