Issue with nuxt SPA mode and Facebook scraper only on one website language

[DidoMarchet]

Hi!
I've made this website with Nuxt in SPA mode, hosted by Netlify and pre-rendered by Netlify.
https://www.propostavini.com/

This website has two languages: IT (without suffix in the url) and EN (with suffix in the url).

SEO works great for all pages.

My issue concerns about sharing dynamic pages on Facebook.

If I test with Facebook scraper the IT pages (without suffix) it works:
https://developers.facebook.com/tools/debug/?q=https%3A%2F%2Fwww.propostavini.com%2Fi-nostri-progetti%2Fvini-estremi%2F

If I test the EN version of the page It doesn't work returning the default og tags of the application:
https://developers.facebook.com/tools/debug/?q=https%3A%2F%2Fwww.propostavini.com%2Fen%2Four-projects%2Fvini-estremi%2F

I'm struggling because all tags are rendered correctly and the implementation is the same for both languages.
Netlify prerender work too because for the main language there's no issues.

Do you have any advice?

Thanks in advance and regards,

Davide

[stale]

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