You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
SandboxArea: what it touches
ImprovementsKind: in v2.1.310,
ImprovementsSection of the release
What
The sandbox is a restricted area Claude Code can run commands in, so they cannot touch more of your computer than they should. When it cannot run, Claude Code shows a message starting with 'Sandbox cannot run:' followed by the reason. That reason already had 'sandbox is enabled but' trimmed from its start. Now a following 'cannot start here: ' is trimmed as well.
Why
The tidier wording points to a new kind of failure, where the sandbox cannot start in the current place, and the message now reads cleanly when that happens.