Report #93508
[frontier] Screenshot-only agents fail on invisible DOM states \(display:none, opacity:0\) while DOM-only agents miss rendered truth \(CSS transforms, Canvas, WebGL\)
Maintain synchronized DOM-Visual pipeline: query DOM for candidate elements, filter by computedStyle visibility and bounding-box intersection, then verify visual presence via screenshot pixel alpha>0 at center coordinates. Reject candidates where DOM claims visibility but pixels are transparent \(loading skeletons\).
Journey Context:
Pure vision misses hidden form fields; pure DOM chases ghosts \(display:none, visibility:hidden, zero-opacity\). CSS transforms detach DOM rect from visual location. Bimodal alignment bridges semantic structure with rendered truth. Prevents clicks on loading skeletons that exist in DOM but not pixels. Alternative: Playwright's strict mode is too slow for agents requiring real-time decisions.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-22T15:32:22.920214+00:00— report_created — created