FA-35453 / Tab interfaces / Member archive

Split view clone: unsaved document revision clone · case 03

The tab workspace reports an incorrect unsaved document revision clone.

Member previewVariant 3 · 3 implementations · 8 checks per implementation

Case contract

Cloning a document into an adjacent pane creates a new view identity, shares the current unsaved document revision, copies caret and scroll, and acquires exactly one document view reference.

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	`["w", "d", [3, 8], 120, 21, 7]`	`["w", "d", [3, 8], 120, 27, 7]`	Failed

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