Ah understood! The original orthographic camera implementation has had issues with lighting for quite some time. I believe some of the issues were addressed in UE5, but most users that run into those lighting issues (or in your case the ordering issues) by swapping to a perspective camera, with a low field of view and long distance to emulate an orthographic camera as a workaround. This introduces other issues for “True” orthographic games, but the visual artifacting should stop.
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