Problem with Google Maps iframe in Accordions

Hello,

On my website, I use to add Google Maps iframe in my accordions. But I have noticed that it doesn't work anymore in the recent accordions, but it works in the old ones (older than around 6 months)

Example 1 : when I am adding my new accordion from scratch, I am seeing the iframe but it disappears as soon as I publish it.

Example 2 : same thing if if I duplicate an old one. On the website, the old one is still here but not the new one.

Am I doing something wrong ?

Thanks,

Clément.