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ON_EXCEPTION, ON_COMPLETION, and ERROR_HANDLER compounds were included in the same root ELK graph as the main flow. ELK's layered algorithm offset the main flow nodes vertically to accommodate the handler compounds, causing bent arrows between the ENDPOINT and first processor. Now handler sections get their own independent ELK root graphs. The frontend already separates and repositions them, so they just need correct internal layout — not positioning relative to the main flow. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>