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Modal focus restoration: Nested dialogs erase the outer return target · case 02
Nested dialogs erase the outer return target.
Case contract
Opening pushes one return target; closing or Escape pops one scope; restoration chooses the newest connected target; clear empties the stack.
Why this case matters
A deterministic model of modal focus restoration; this isolates one interface invariant without requiring a browser.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| nested open | ["inner"] | ["outer", "inner"] | Failed |
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