RAP Sheet home
Install the bug reporting skill
3 people reported

All time, since Oct 7.

Auto-compaction fires early

“The trigger is not a fixed lower window.”

Is this your bug? What gets counted gets fixed. Pile on.

Paste this into your agent. It files your report, with your error and version.

I hit this bug: rapsheet.dev/sheets/claude-code/issues/4887/file
Follow it to file my report. Show me the text before you send.

No install. No account. Public and anonymous. The link asks your agent for one report, nothing else. What it sends

Quiet. No reports in the last two weeks, down from 2 a week at the early-October peak.

Auto-compaction fires early on 1M context window sessions. Compactions marked trigger "auto" fire at irregular points, 24% to 45% of the window, with no auto-compact window configured.

Is this your bug?

File my report
Where
auto-compaction
Versions
2.1.291 to 2.1.296
Platforms
macOS, Windows
How bad
Breaks a normal workflow. Some reports say it used to work.

Part of: Auto-compaction loses session context6 bugs

  1. Auto-compaction loses session context6 people
  2. Autocompact thrashing ends session3 people
  3. Idle auto-compaction35 people
  4. Idle after compaction2 people
  5. Opus 4.6 context capped at 200K12 people

Original reports3, newest first

  1. Auto-compaction triggers early at 24-45% of 1M context window with no user config#101430
  2. Auto-compaction fires at 281K–845K tokens on 2.1.296 for claude-opus-5-5 (documented default ~967K)#101067
  3. Auto-Compact triggers prematurely on Opus 5.5 1M context window#100277

Do you work on Claude Code?

Claim its RAP Sheet to see what your users report and answer them in one place.

Claim a tool