What happened
In spec-lane, a plain scalar success condition — some text followed by '#' and a comment — lost the commented half when parsed by yaml@2.9.0, yet the shortened string still matched the matrix and validate/advance returned exit code 0.
Why it matters
The gate itself was not broken; the value handed to it was already different from what a human saw in the source, so passing the gate no longer proved that the full intended condition was verified.
What to watch
The v0.11.0 fix refuses to load such inputs rather than guessing intent, but the release notes flag known over-detection — an unrelated commented plain scalar elsewhere in intent.yaml that parses to the same text as a success condition can still trigger rejection.
WHO IT HITSBuild and CI engineers maintaining spec-driven development pipelines, and anyone writing machine-readable acceptance criteria in YAML, are most directly affected, since a silent parse-time change can let a pipeline advance to a verification phase without actually checking the full intended condition.
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