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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 v2.1.228

OAuth refresh races clear the cached account

You'll notice
Useful2 Signal2
Auth

When another process refreshes your login, the session re-reads who you are signed in as.

What

When Claude Code detects that another process already refreshed the login token, it now clears its in-process cache of the authenticated account before recording the race, so the session re-derives who you are signed in as rather than holding on to the pre-refresh account.

Details
  • The cache is invalidated by bumping its epoch, which happens before the tengu_oauth_token_refresh_race_resolved telemetry fires.
Evidence

tengu_oauth_token_refresh_race_resolved

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 v2.1.228 →