2 people reported

All time, since Oct 3.

Stream-json stdout output lost

In print mode with --output-format stream-json, frames such as the result line never reach stdout though the session JSONL has them.

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I hit this bug: rapsheet.dev/sheets/claude-code/issues/1880/file
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Stream-json stdout output lost while transcript records full turn.

Is this your bug?

Where: print mode
Versions: 2.1.283 to 2.1.296
Platforms: Linux, macOS
How bad: Breaks a normal workflow.

Original reports2, newest first

Oct 12, 2026-p --output-format stream-json exits before flushing stdout, so a slow reader loses the end of the reply and the result line#101641
Oct 3, 2026--print --input-format stream-json --output-format stream-json: CLI stops writing to stdout while still recording assistant turns in the session JSONL#99194

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