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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial
HomeReleasesv2.1.239entry #81

Claude Code v2.1.239 ·

Live-document collaboration note added to the artifact instructions, but nothing can reach it

A live-document collaboration note for artifacts exists but its gate is always closed.

Nothing to try yet In Development
JSON All of v2.1.239
Nothing to try yetTier: how much it should matter to you
1Useful: my rating, 1 to 5
4Signal: worth watching, 1 to 5
ArtifactsArea: what it touches
In DevelopmentKind: in v2.1.239,
What probably matters to youSection of the release

The note depends on a live-document streaming module set to null, so it never appears.

What

A new helper appends a collaboration note to the artifact instructions, gated on a live-document module reporting that its streaming gate is open. That module is set to null in this build, so the gate is always false and the note never appears.

Details
  • The helper reads two texts, NO_WATCH_RAIL_COLLAB_NOTE and LIVE_DOC_RESULT_PREFIX, off the same null object and calls liveDocStreamGateOpen() on it through optional chaining, which yields undefined.
  • The same null also makes the live-edit action and the live-document result prefix dead code. The previous build's counterpart was null too.
  • This is a build-time null, not a remote flag: no server setting can switch it on.
Evidence

NO_WATCH_RAIL_COLLAB_NOTE

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

See this entry in the whole of v2.1.239 →

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