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claude-code - 💡(How to fix) Fix Thinking block chevron does not collapse (click ignored) on macOS 26.3.1 [1 participants]

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anthropics/claude-code#52739•Fetched 2026-04-24 10:40:55
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Clicking the chevron on an extended-thinking block in the transcript does nothing — the block stays expanded. Persists after a full reinstall of the Claude app.

Root Cause

Clicking the chevron on an extended-thinking block in the transcript does nothing — the block stays expanded. Persists after a full reinstall of the Claude app.

RAW_BUFFERClick to expand / collapse

Summary

Clicking the chevron on an extended-thinking block in the transcript does nothing — the block stays expanded. Persists after a full reinstall of the Claude app.

Environment

  • Claude Code: 2.1.79
  • macOS: 26.3.1 (build 25D2128)
  • Kernel: Darwin 25.3.0, arm64 (Apple Silicon)
  • App reinstalled: yes (issue persists)

Steps to reproduce

  1. Have a conversation where the model produces a thinking block.
  2. Click the chevron/disclosure arrow on that thinking block to collapse it.

Expected

The thinking block collapses and the chevron rotates.

Actual

Click is ignored. Chevron does not rotate, block stays expanded. No visible feedback.

Other notes

  • Other chevrons (tool output, todo list) — please confirm whether this is thinking-block-specific or affects others too.
  • Reinstalling the app did not fix it, so the state likely lives in ~/.claude/ (settings, cached UI state) rather than the app bundle.

extent analysis

TL;DR

The issue might be related to a specific setting or cached UI state in ~/.claude/ that is not being updated or cleared after reinstalling the app.

Guidance

  • Verify if the issue is specific to thinking blocks or if it affects other chevrons (tool output, todo list) as well to narrow down the cause.
  • Check the contents of ~/.claude/ for any files or settings that could be related to the UI state of the thinking blocks and try removing or resetting them.
  • Test if the issue persists after clearing the app's cache or resetting its settings to their default values.
  • Consider checking for any updates to the Claude app or macOS that might address this issue.

Notes

The issue seems to be related to the app's state or settings rather than the app itself, as reinstalling the app did not fix the problem. Further investigation into the ~/.claude/ directory and the app's settings is needed to determine the root cause.

Recommendation

Apply workaround: Try removing or resetting the relevant files or settings in ~/.claude/ to see if it resolves the issue, as the problem seems to be related to the app's state rather than the app itself.

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