This was reported by the studio. When opening one of the lighting files in 4.3, Blender would crash. The realize instance task for grease pencil needs to copy all the layer attributes to the target geometry. When creating the `dst_attribute_writers` using `lookup_or_add_for_write_only_span` the `bke::AttrDomain::Point` was used when it should have been `bke::AttrDomain::Layer`. Pull Request: https://projects.blender.org/blender/blender/pulls/125603