My bad as I posted the first screenshot without explanation.Asus made some changes to robocfg, which broke it. I fixed it for most models, but looks like there's one more exception case for the RT-AC87U.
BTW, when reporting an issue, please don't just post a screenshot saying "it's broken". I wasted a good amount of time to figure out what you guys were actually referring to. A simple explanation would have been most helpful.
On a side note (aesthetics only as the core code is different based on processor type - no functionality issues; I have only N66 and AC87): the order of interfaces for N66 is LAN 1 to 4, while for AC87 is LAN 4 to 1.
Thanks for the hard work!