Hi guys, I resolved this issue. 

My situation is using Odoo docker and a swag docker with Nginx as https issuer and renewer.

After I searched the solution, I found adding next line to the Nginx or Swag config resolved the problem:

add_header 'Content-Security-Policy''upgrade-insecure-requests'; 

The config file looks like:

error_page 502 /502.html;

add_header 'Content-Security-Policy''upgrade-insecure-requests'; 
# redirect all traffic to https

server {

    listen 80 default_server;

    listen [::]:80 default_server; 

    server_name _;

    return 301 https://$host$request_uri;

}

I have same issue. 
I am using nginx and docker. I've added line,

add_header 'Content-Security-Policy' 'upgrade-insecure-requests'; 

but still I can't reach editor panel through domain name. 

 

Gracias Liu Cubeano, 

yoa solucíón es éste

add_header 'Content-Security-Policy''upgrade-insecure-requests'; 

Incluir en archivos de configuracion que está en sites-available (ngnix)

    escuchar 443 ssl;

    nombre_servidor nanotec.com.pe www.nanotec.com.pe *.nanotec.com.pe;

    # SFR Para solucionar website no editable por defecto o hay loop indefinido al editar

    add_header 'Content-Security-Policy' 'upgrade-insecure-requests';

Greetings, 

I am having the same problem, I am using Docker and Odoo 16. The log was not giving me relevant information about any failure, but the browser console was informing me about mixed content blocking.

With some searching I came across this solution, which for now for development purposes is fine for me.

https://support.mozilla.org/en-US/kb/mixed-content-blocking-firefox

It is similar in other browsers.

It sounds like you may have encountered a bug with the Odoo frontend editor when using a domain name with a server block. To confirm this, it would be helpful to check the Odoo logs to see if there are any error messages related to the frontend editor. Additionally, you could try disabling the server block and using the IP address directly to see if that fixes the issue. If the problem persists, you may want to reach out to the Odoo community or the Odoo support team for further assistance.