Hello PIERLUIGI

Apology for the inconvenience. Please share your administrator access here to check the issue. Use the Hidden Content box to share the credentials. Make sure that you have a full site backup with you before sharing.

Best regards

I share login information, there are two templates, but the problem manifests itself on both of them and also on other templates that I have tried.

It looks like a bug. I have informed the developer team about it. Hopefully, it will be fixed in the next version. Till then, please use the backend editor.

I'm still waiting for the bug to be changed, I think it's important not to be able to edit a frontend article for a client.