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Nearest-edge scroll reveal: An oversized item reveals its end instead of its leading edge · case 02
An oversized item reveals its end instead of its leading edge.
Case contract
Keep already-visible items stationary; reveal nearest edge; align oversized items at the start; clamp offset to the scrollable extent.
Why this case matters
A deterministic model of nearest-edge scroll reveal; 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 |
|---|---|---|---|
| oversized | 20 | 10 | Failed |
MEMBER ARCHIVE
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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.
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