We have a staging site setup with Wpengine and since the Wordpress 4.0 update, all pages that require SSL are refusing to connect.

Error from Chrome:

> 
> Your connection is not private Attackers might be trying to steal your
>  information from your-site.staging.wpengine.com (for example,
>  passwords, messages, or credit cards).
> 
> 
> 

Error from Firefox:

> 
> This Connection is Untrusted You have asked Firefox to connect
>  securely to your-site.staging.wpengine.com, but we can't confirm that
>  your connection is secure. Normally, when you try to connect securely,
>  sites will present trusted identification to prove that you are going
>  to the right place. However, this site's identity can't be verified.
> 
> 
> 

Is anyone else experiencing the same issue or found a workaround? In Chrome, you can click Advanced > Proceed and still see the site just with SSL errors.