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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

Claude Code v2.1.228 ·

Unrenderable message errors no longer echo arbitrary text

The "unable to render message" notice no longer echoes arbitrary text from the message.

You'll notice Bug Fixes
JSON All of v2.1.228
You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
Terminal UIArea: what it touches
Bug FixesKind: in v2.1.228,
Bug FixesSection of the release
What

The "Unable to render message type" fallback used to print the raw type value from the message block. It now prints the type only if it is on an allowlist, and otherwise reports non-allowlisted (non-string) or just a length.

Details
  • The allowlist now includes the newly handled fallback and mid_conv_system types.
Evidence

non-allowlisted (non-string)

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

See this entry in the whole of v2.1.228 →

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