TYPO3 Core

Hi together,

how can it be that SetEnv HTTPS on in apache breaks the host header in Typo3?

Example configuration:

Nginx:
listen 443 ssl;
proxy_set_header Host www.example.net;
proxy_pass http://$backend:8080;

Now if I configure Apache without SetEnv HTTPS on, then I'm able to browse to https://www.example.net/typo3, I'm able to login and if I replace http with https - typo3 redirects to http - all works fine. The next step is to configure SetEnv HTTPS on in Apache, but Typo3 says after that: "The current host header value does not match the configured trusted hosts pattern!". If I de-configure SetEnv HTTPS on all works fine again with the exception that http is used.

How can it be that the variable HTTPS on breaks the host header?

Regards
Jonny