FA-36823 / Tab interfaces / Member archive

Multirow tab strip: active logical row · case 03

The tab workspace reports an incorrect active logical row.

Member previewVariant 3 · 3 implementations · 6 checks per implementation

Case contract

A multirow strip greedily packs indivisible tab widths with exact fits allowed. The active tab row is painted adjacent to content after other rows; tab identity and within-row coordinates follow this row permutation.

Why this case matters

Offline tab/panel workspace behavior; no browser or desktop framework is emulated.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
workspace regression 0	`[[[0, 1], [2, 3]], 0, 2, [[0, 1], [2, 3]], 72, [0, 1, 2, 3]]`	`[[[0, 1], [2, 3]], 0, 1, [[0, 1], [2, 3]], 72, [0, 1, 2, 3]]`	Failed

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

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