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Single remaining menu subscriber loses its shared provider · case 03

Single remaining menu subscriber loses its shared provider.

Member previewVariant 3 · 3 implementations · 8 checks per implementation

Case contract

Providers can be shared by multiple menu surfaces; leases control attachment lifetime and only visible subscribers receive presentation updates.

Why this case matters

Cascading and context menus require coherent command and session state as content changes.

One recorded failure

Sample boundary fixture

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

Boundary fixtureActualExpectedOutcome
dispose contracttruefalseFailed

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

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