FA-35942 / Tab interfaces / Member archive

Tab group collapse: collapsed member visibility · case 02

The tab workspace reports an incorrect collapsed member visibility.

Member previewVariant 2 · 3 implementations · 6 checks per implementation

Case contract

Collapsed tab groups display only a header and active member placeholder; preserve membership, count dirty documents and expand before revealing an inactive member.

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	`[["a", "b", "c", "extra0"], 4, 2, "b", true, ["a", "b", "c", "extra0"]]`	`[["b"], 4, 2, "b", true, ["a", "b", "c", "extra0"]]`	Failed

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

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