bpmn-auto-layout — simple-approval.json
Both pipelines received the SAME semantic BPMN (we stripped the <bpmndi:BPMNDiagram> from our output before feeding to bpmn-auto-layout, so its layout engine starts from scratch).
Differences in what's drawn are differences in their renderer, not in the source model.
See tests/bench/auto-layout-comparison.md for element counts.