Linux – Apache Reverse Proxy https to http

I have an internet-accessible apache server that has SSL enabled and working.
On the local network, there is another server which provides a tomcat app over http.

The apache server reverse proxies the tomcat app. When the apache server is used over http, the tomcat app is correctly proxied, but when using it over https, the tomcat server returns 404 resource not found. So is the https request not translated to http? I would prefer to do it without touching the tomcat config, since that's not my area.

This is my config:

<VirtualHost *:443>
        ServerName ext-service.example.com
        SSLEngine on
        SSLCertificateFile /etc/apache2/ssl.crt/mycert.crt
        SSLCertificateKeyFile /etc/apache2/ssl.key/mykey.key
        SSLCertificateChainFile /etc/apache2/ssl.crt/mybundle.crt
        ProxyRequests Off
        ProxyPreserveHost Off
        <Proxy *>
          AddDefaultCharset off
          Order deny,allow
          Allow from all
        </Proxy>
        DocumentRoot /srv/www/empty/
        ProxyPass / http://int-service.example.com/
        ProxyPassReverse / http://int-service.example.com/
</VirtualHost>