This is the problem with complex setups.
Developpers often do not have at hand the testing network to be able to test.
This is specially the case with OpenVPN, IPv6, MultiWAN, MultiLan, ML-PPP, vlans, bonding, QinQ, and other advanced setups.
And professional users can't put beta or alpha software on a production platforme.
I tried to put 2.0 alpha on production but reverted to 1.2.3.
2.0 has very nice features, all that was missing inside 1.2. It is a good mix of the good ideas of zeroshell, the PFsense interface, and FreeBSD.