The following servers don't send the intermediate certificate: RapidSSL SHA256 CA - G3. It can be downloaded from http://gv.symcb.com/gv.crt.
- rt.wikimedia.org
- wikitech-static.wikimedia.org
- etherpad.wikimedia.org
[1] https://www.ssllabs.com/ssltest/analyze.html?d=rt.wikimedia.org
[2] https://www.ssllabs.com/ssltest/analyze.html?d=wikitech-static.wikimedia.org
[3] https://www.ssllabs.com/ssltest/analyze.html?d=etherpad.wikimedia.org