I have a very weird issue while trying to publish or update a post/page. Each time I try, I have the following error in the Gutenberg editor: “Update failed” or “Publish failed” depending the situation.

The thing is that it only happens with the browser Safari on Mac. I tried with Chrome and Firefox, it works like a charm.

Does anybody know this issue? I’m a WordPress developer for a few years now and I never saw something similar.

I’m using WordPress 5.2.2.