v1.6 does not function with domain mapping if you are using secure headers

In both sub-directory and sub-domain setups the editor will fail to load everytime if you have secure headers implemented.

Using Same Origin or Allow-From will not work as the mapped domain being edited will be referencing files from the network domain.

I consider this a huge step backwards in security and functionality for Elementor if I have to disable secure headers to get the editor to work when it worked flawlessly with v1.5 in a very strict secure settings deployment.