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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.247

Background task output that cannot be written to disk is now marked instead of vanishing

You'll notice
Useful3 Signal2
Background Tasks

Background output that couldn't be written to disk now shows a visible gap marker instead of silently truncating.

What

When Claude Code fails to write a background task's output to its on-disk buffer, it inserts a visible placeholder line so the transcript shows an explicit gap rather than text that just looks cut short.

Details
  • The first write failure puts the marker at the front of the buffer and latches, so the note appears once rather than per failed write.
  • Once more than 16 MB of unwritten output has piled up, it logs at error level, discards the pending output and keeps only the marker.
Evidence

[output omitted: it could not be written to disk]

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.247 →