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[BUG] Thinking display not working in web UI #21548
Description
Description
The thinking/reasoning display feature works correctly in the TUI (Terminal User Interface) but does not work in the web UI. The collapsible "Thinking" container with reasoning summaries does not appear in the timeline when using the web interface.
Plugins
No response
OpenCode version
1.3.13
Steps to reproduce
- Start OpenCode with a model that supports reasoning/thinking (e.g., Claude with extended thinking)
- Send a message that triggers model reasoning
- Observe in TUI: Thinking container appears.
- Open web UI in browser
- Observe in web UI: Thinking container does not appear / thinking is not displayed
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Operating System
macOS 26.3.1
Terminal
zed terminal, Ghostty
Reacted by Maksym Mospanenko, Oscar, Michael, Ellie, David Villamizar, RubenKluft, Adriano Meligrana, Burhan and Benjamin DANIEL
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github-actions commentedon Apr 8, 2026
This issue might be a duplicate of existing issues. Please check:
If this is a different issue (e.g., thinking content is entirely absent vs. not visually distinct), please add more context to help distinguish it.
jk779 commentedon Jun 22, 2026
This is another problem: now the Web UI does not show anything at all of the
Thinkingcontent.I guess a fix would be to be able to click
Thinkingand then expand the content of it (and keep on expanding thinking content from then on, similar to what would happen in the TUI when entering/thinking)github-actions commentedon Aug 22, 2026
To stay organized issues are automatically closed after 60 days of no activity. If the issue is still relevant please open a new one.
feat(session-ui,app): collapsible reasoning cards for desktop/web