When a breaker trips it will take power off lights and receptacles. It all depends on how the electrician wired it up so yes that’s not unusualyes two small tripped breakers near each other. One for lights in house,second for power in wall sockets.
Why i lose a power circuit too when a bulb blowed on a lighting circuit?
why power in wallsockets go out and lights at the same time? its as expected?
RCD ( that biggest on left ) not tripped.