codex - 💡(How to fix) Fix Long threads can jump back to top while scrolling downward toward latest output [2 comments, 2 participants]

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openai/codex#17193Fetched 2026-04-10 03:44:13
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In very long conversations, scrolling downward toward the latest output can suddenly reset the viewport back to the top of the thread.

This makes it very difficult to get back to the newest messages in long chats.

This may be related to #17169, but the user-visible symptom here is specifically:

  • not just scrolling up causing a jump to the center
  • but also scrolling downward in long threads causing the view to jump back to the top

Root Cause

In very long conversations, scrolling downward toward the latest output can suddenly reset the viewport back to the top of the thread.

This makes it very difficult to get back to the newest messages in long chats.

This may be related to #17169, but the user-visible symptom here is specifically:

  • not just scrolling up causing a jump to the center
  • but also scrolling downward in long threads causing the view to jump back to the top
RAW_BUFFERClick to expand / collapse

Bug Report

App version: 26.406.31014 (1395)
Platform: macOS

Description

In very long conversations, scrolling downward toward the latest output can suddenly reset the viewport back to the top of the thread.

This makes it very difficult to get back to the newest messages in long chats.

This may be related to #17169, but the user-visible symptom here is specifically:

  • not just scrolling up causing a jump to the center
  • but also scrolling downward in long threads causing the view to jump back to the top

Steps to Reproduce

  1. Open Codex app on macOS (version 26.406.31014 / build 1395)
  2. Open a conversation with a very long history
  3. Start from somewhere above the latest messages
  4. Scroll downward toward the newest output

Expected

The thread should keep its current scroll position and allow smooth navigation toward the latest output.

Actual

The viewport can unexpectedly jump back to the top of the conversation, forcing the user to scroll down again.

Impact

High. In long threads, returning to the latest output becomes very time-consuming and frustrating.

Additional Context

This started after updating to 26.406.31014 (1395).

extent analysis

TL;DR

The issue can be mitigated by investigating and potentially fixing the scrolling logic in the Codex app to handle long conversations without resetting the viewport.

Guidance

  • Investigate the changes made in version 26.406.31014 (1395) to identify potential causes for the scrolling issue, as it started after the update.
  • Review the code related to scrolling and viewport management in long conversations to ensure it correctly handles the scroll position.
  • Consider adding a temporary fix or workaround to prevent the viewport from jumping back to the top when scrolling downward in long threads.
  • Test the app with various conversation lengths and scrolling scenarios to reproduce and verify the issue.

Example

No specific code snippet can be provided without more context, but the fix might involve modifying the scrolling logic to correctly update the viewport position when navigating through long conversations.

Notes

The issue might be related to #17169, but the specific symptom described here is different, so the solution may need to address both issues or verify if fixing one resolves the other.

Recommendation

Apply a workaround to the scrolling logic to prevent the viewport from jumping back to the top in long conversations, as the root cause is likely related to the update and needs further investigation to provide a permanent fix.

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