Hello, Damien
I’ve created “test” product on your site, and entered description manually without using Elementor – https://prnt.sc/grJ2aaFlCfn9 and here is the result – https://prnt.sc/NV3NV4r2RTX9 It is the correct behavior.
Sorry, but your request or problem is unclear to me. As I can see, all works fine.
Kind Regards,
8Themes Team