I don't know if this problem is in DevOps Concern or Development side but would appreciate any answers.
We have this NextJs application, dockerized and deployed on Nginx. We have deployed it on our local server and it runs smoothly when we access it on our local network using the ipaddress and port assigned, and in any devices and browsers. This project should be accessed outside the network, we have assigned it with secured subdomain. When we accessed it outside the network, the content is not accessible it is always loading, it shows the title of the page but it wont stop loading it has huge amount of CPU consumption on the browser. We have discovered that on Firefox browser, they have this HTTPS-Only Mode feature, when we enabled it, the system runs smoothly without any loading.
What seems to be the problem here? Our domain is secured but still depends on HTTPS-Only Mode for it to be accessed outside the network.
Thank you so much for the feedbacks.