You don't mention your coach and year, but I'm sure it's working as designed.
Half of the sockets are typically circuits that run thru the inverter. The other are not, and are only connected to the main circuit breaker panel which are hot only with the generator or shore power.
In my case, the PS sockets, Kitchen, Bath, and Entertainment are on the inverter and work all the time. My DS sockets (by the sofa, and bedroom) are only available via generator or shorepower.
Since you had your circuit breaker box open and replaced a breaker, if you look closely it is not a typical breaker box. It is split into two pieces, with the 2nd piece being a 'sub-panel'. The first half of the box has the circuits that are only powered from shore/genny, including the 120 power feed TO the inverter. The wire coming back FROM the inverter, plugs into subpanel section....and that is what powers the remaining breakers in the box. You should see that the circuit that is 'not' working in your scenario(while in inverter mode), is on the main half of the breaker box.
DaveB, Raleigh, NC
2015 Tiffin RED 33AA, w/Honda CRV
VMSpc, Magnum BMK/ARC50