Das Problem ist das die News rewrite nicht an der richtigen Stelle ist. Und immer vor dem rewrite der application / sein muss.
Das heißt die müsste so aussehen
Apache Configuration
RewriteEngine On
RewriteCond %{REQUEST_URI} !\.well-known/acme-challenge
RewriteCond %{REQUEST_URI} !(.*)\.txt
RewriteCond %{HTTPS} !=on
RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
<IfModule mod_rewrite.c>
RewriteEngine on
RewriteBase /
# Rewrite application /blog/
RewriteCond %{SCRIPT_FILENAME} !-d
RewriteCond %{SCRIPT_FILENAME} !-f
RewriteRule ^blog/(.*)$ blog/index.php?$1 [L,QSA]
# Rewrite application /calendar/
RewriteCond %{SCRIPT_FILENAME} !-d
RewriteCond %{SCRIPT_FILENAME} !-f
RewriteRule ^calendar/(.*)$ calendar/index.php?$1 [L,QSA]
# Rewrite application /gallery/
RewriteCond %{SCRIPT_FILENAME} !-d
RewriteCond %{SCRIPT_FILENAME} !-f
RewriteRule ^gallery/(.*)$ gallery/index.php?$1 [L,QSA]
# Rewrite application /filebase/
RewriteCond %{SCRIPT_FILENAME} !-d
RewriteCond %{SCRIPT_FILENAME} !-f
RewriteRule ^filebase/(.*)$ filebase/index.php?$1 [L,QSA]
# Rewrite application /forum/
RewriteCond %{SCRIPT_FILENAME} !-d
RewriteCond %{SCRIPT_FILENAME} !-f
RewriteRule ^forum/(.*)$ forum/index.php?$1 [L,QSA]
# Rewrite application /wcf/
RewriteCond %{SCRIPT_FILENAME} !-d
RewriteCond %{SCRIPT_FILENAME} !-f
RewriteRule ^wcf/(.*)$ wcf/index.php?$1 [L,QSA]
# Rewrite application /cms/
RewriteCond %{SCRIPT_FILENAME} !-d
RewriteCond %{SCRIPT_FILENAME} !-f
RewriteRule ^cms/(.*)$ cms/index.php?$1 [L,QSA]
# Rewrite application /core/
RewriteCond %{SCRIPT_FILENAME} !-d
RewriteCond %{SCRIPT_FILENAME} !-f
RewriteRule ^core/(.*)$ core/index.php?$1 [L,QSA]
# Rewrite application /news/
RewriteCond %{SCRIPT_FILENAME} !-d
RewriteCond %{SCRIPT_FILENAME} !-f
RewriteRule ^news/(.*)$ news/index.php?$1 [L,QSA]
# Rewrite application /
RewriteCond %{SCRIPT_FILENAME} !-d
RewriteCond %{SCRIPT_FILENAME} !-f
RewriteRule ^(.*)$ index.php?$1 [L,QSA]
</IfModule>