To provide more context:
The issue occurs exclusively on the Xbox Series X console, while the exact same aircraft works correctly when using MSFS via the Xbox App on PC. This means the lighting systems, assets, and shaders are functioning as intended on PC, but the Xbox console build appears to be missing or failing to load the dynamic lighting components.
On Xbox, the A350 loads normally, all systems initialize correctly, and the aircraft is fully flyable. However, every dynamic light source is absent, including:
Cockpit flood lights
Dome lights
Panel wash lighting
External navigation lights
Beacon and strobe lights
Taxi and landing lights
No light cones or reflections on the ground or fuselage
Only static elements such as button backlighting and the display screens render correctly. This strongly suggests that the Xbox version is either:
using an outdated or incomplete lighting package, or
failing to compile or load the required lighting shaders after the latest update.
The fact that the A320neo and other aircraft display lighting correctly on the same Xbox system confirms that the simulator itself and the console hardware are functioning normally. The problem is isolated to the A350 package on Xbox.
This scenario indicates a platform‑specific regression introduced in the most recent update, affecting only the console version.