{"version":"2.1.285","anchor":"session-reply-to-background-job-refuses-build-skew","canonical_anchor":"session-reply-to-background-job-refuses-build-skew","heading":"Replying to a background job fails if it runs a different Claude Code build","tier":"notice","area":"Sessions","url":"https:\/\/changelogs.core-directive.com\/v\/2.1.285\/e\/session-reply-to-background-job-refuses-build-skew","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.285","markdown":"### Replying to a background job fails if it runs a different Claude Code build\n\nA reply that continues a background job now fails with the error code ESKEW if the job runs a different Claude Code build\n\n**What**\n\nA background job is Claude Code work that keeps running without you watching it. You can reply to one with a follow-up, and that reply now accepts a next-turn option for the job's next step. If you send a next turn to a job that was started by a different Claude Code build, the reply fails with the code `ESKEW` and a message saying the job runs a different Claude Code build.\n\n**Why**\n\nYour follow-ups are not sent to an older background process that may no longer match the Claude Code you are using.\n\n- Area: Sessions\n- Tier: You'll notice\n- Useful: 3\/5\n- Signal: 3\/5"}