Chapter: testability
Rule: missingStableId
Spec: Missing stable id
There is no stable id. The next walk, spec, or retry may not find this control even when it is still on screen.
Role + accessible name can still locate it, but duplicate names and renamed labels flake. A unique id, name, or data-testid makes replay and specs cheap.
This id is stable. Reports link here so T/V/Q classes do not shuffle when a soak ranks differently.