I can confirm the romon issue.
After upgrading RB760iGS (hEX S), RBcAPGi-5acD2nD (cAP ac) and CRS309-1G-8S+ from 6.49.3 to to 7.1.3 RoMON is not working any longer.
Also see http://forum.mikrotik.com/t/v7-1-1-is-released/154314/1 which seems still being the current state.