Comment 1 for bug 507469

Thank you for using Ubuntu and taking the time to report a bug. I'll need to look at this more before considering making changes, but I did want to say in the meantime that /etc/ufw/*.rules are there for you as an administrator to adjust as necessary for your site requirements. Feel from to remove those lines from before.rules and adjust after.rules to have:
-A ufw-after-input -m state --state RELATED,ESTABLISHED -j ACCEPT
-A ufw-after-output -m state --state RELATED,ESTABLISHED -j ACCEPT

For large rulesets, this may affect performance, but I imagine in most ufw setups it won't make any appreciable difference. Thanks again and report back how this works out for you.