When testing my IPad 3 iOS 8.1 and iPhone 6+iOS 8.1.2 .. Openvpn app shows VPN address for IPv4 and IPv6 correctly.
However when tested via http://ip6tools.com/check_client.php
My correct Isp IPV6 info shows..Not my VPN

Logs show no failure issues and IPv4 works flawless. IPv4 passes DNS leak test and ip check..
VPN provider Mullvad
Can anyone else confirm this issue ?