What
Claude Code has a step that sorts rejected requests with the statuses 400, 403 and 415 into categories. That step no longer starts by checking whether the response was successful. When it looks for the invalid_json_at_origin case, it now reads the response text directly.
Why
This is internal error handling, and the finding does not describe anything you would see differently.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
The finding does not say whether any error messages or retries change as a result.