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Overlay dismissal stack: Clicks on overlay descendants are mistaken for outside clicks · case 05

Clicks on overlay descendants are mistaken for outside clicks.

Member previewVariant 5 · 3 implementations · 12 checks per implementation

Case contract

Only the topmost overlay handles Escape/outside policy; inside descendants are exempt; explicit unmount removes only its identity.

Why this case matters

A deterministic model of overlay dismissal stack; this isolates one interface invariant without requiring a browser.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixtureActualExpectedOutcome
inside child[][{"escape": true, "id": "a", "inside": ["a", "child"], "outside": true}]Failed

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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

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