In the attached screenshots, you can see that currently power is supplied to the aircraft through the the Batteries (DC), and the static inverter (AC), however the emergency cabin lighting is still completely off even with the cockpit switch in the on position (the same is true when the cockpit switch is in the arm position). This bug isn't immersion-breaking by any means, but it would be much appreciated if this could be fixed, as this system is one of the most important emergency systems on the aircraft and is actually not directly connected to the aircraft's electrical system, but is powered by 8 batteries located above each door, which are charged by the aircraft's electrical system, however in case of a total loss of electrical power, the emergency lighting system is able to be powered for at least thirty minutes by each battery pack. I'll attach a pdf guide to the lighting system of the A350, if you're looking for the emergency exit lighting system, it's on page 56.

pdfcoffee.com_a350-ata-33-pdf-free.pdf

Thank you for this, I will pass it along to the developers.