Are invisible redirects to a Traccar server possible?

I am investigating whether it is possible to have an invisible redirection from say https://www.example.com to a Traccar server.
I have tried this to a demo server and I get to the home page, but it will log me out immediately after logging in.
Note that I don't mean a visible redirection, where the url in your browser bar changes.
Do all Traccar servers forbid invisible redirection, or just the demo servers?

There is no such thing as invisible redirect. Are you talking about iframe?

Hello, yes.

So https://www.example.com wraps an iframe around https://demo1.traccar.org, such that the browser keeps showing https://www.example.com as the url in its address bar.
Does Traccar log you out immediately after logging in when you are accessing it via an iframe?
Note: A visible redirect (permanent 301 and temporary 302) are possible, i.e. when the browser shows the target url https://demo1.traccar.org.

I suspect there are some cookies issue.