FA-11415 / Accessibility interaction semantics / Member archive

Table headers leak across row groups or override explicit associations · case 05

A cell announces a group header belonging to a different section or inferred headers alongside explicit ones.

Member previewVariant 5 · 3 implementations · 7 checks per implementation

Case contract

Controlled table model: each header is [id,scope,index,group], scope is row, col, rowgroup or colgroup. Cell is [row,col,rowgroup,colgroup]. None explicit IDs enables inference: row/col match index, group scopes match corresponding group. An explicit list, even empty, disables inference; resolve its existing IDs in given order, deduplicating. Return IDs; fixture IDs are unique and every header has one scope.

Why this case matters

A controlled offline accessibility-data model. It isolates the stated contract; it does not simulate browser accessibility APIs or claim full ARIA conformance.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
row group boundary	`["old", "current"]`	`["current"]`	Failed

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

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