Hey Alessandro,
Did you insert those shortcodes manually or the content inside the Accordion was just converted into shortcodes during the update?
If they were converted into shortcodes, that is a problem. We will need you to revert your site from a previous working state so we could see the previous setup.
If you inserted the shortcode manually, that is not a problem with our builder as those shortcodes were not intended to be used manually. I understand it might have worked before but because it’s not intended to be used that way, we can’t guarantee a fix.
We have the Global Blocks feature if you wish to use the builder for content setup and plug the content anywhere in your site.
With that said, please use the Global Blocks feature and insert the Global Block shortcode to your accordion items.
I’ll pass this on to our development team and they will be the ones to decide if your setup will be supported or not. I’m just managing your expectation beforehand.
Thank you for understanding.