Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
Thinking DisplayArea: what it touches
Internal ChangesKind: in v2.1.277,
Internal ChangesSection of the release
What
Claude Code detects a particular API error (a 400-level error about how 'thinking' output should be displayed) in order to handle it specially. The detection logic now relies only on a regular expression match against the error message, dropping a second string-matching condition that used to also trigger the detection.
Why
Simplifying to a single check reduces duplicate logic; the regex alone was apparently sufficient to catch the cases the extra string match was also catching.
