FA-36134 / Tab interfaces / Member archive

Drag auto scroll: drag ownership · case 04

The tab workspace reports an incorrect drag ownership.

Member previewVariant 4 · 3 implementations · 7 checks per implementation

Case contract

While dragging a tab, the strip scrolls within edge zones proportional to penetration, stops outside strip and clamps movement to available scroll range.

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 5	`[false, true, true, 60, 36, 248]`	`[false, true, false, 60, 36, 248]`	Failed

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

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