Content previews are broken on Safari and Firefox / macOS

Prismic for Content Creators
1

Previews on staging throw a 405 error on both Firefox and Safari. You can see the changes flash for a second before converting back to the old content.

2

Hi Sabine,

Could you add more information? Where do you see the 405? Do you see any other error messages? Could you include your preview config code and a screenshot of the error?

Thanks,
Sam