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codex - 💡(How to fix) Fix Codex sidebar minimum width regressed in VS Code 26.406.31014 on Windows [1 participants]

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openai/codex#17211•Fetched 2026-04-10 03:43:51
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What version of the IDE extension are you using?

26.406.31014

What subscription do you have?

Plus

Which IDE are you using?

VS Code

What platform is your computer?

Microsoft Windows NT 10.0.26200.0 x64

What issue are you seeing?

After updating to extension version 26.406.31014, the Codex sidebar in VS Code has a noticeably larger minimum width than before.

In the newer version, the bottom controls and labels take more horizontal space. This makes the sidebar harder to resize and causes horizontal clipping in narrow layouts.

In my screenshots, the same VS Code window layout shows a clear difference between:

  • 26.406.31014 (too wide, horizontal overflow)
  • 26.325.31654 (normal, more compact layout)

This regression reduces usable editor space and makes Codex less practical in the sidebar.

<img width="1152" height="1420" alt="Image" src="https://github.com/user-attachments/assets/7dae1092-7898-4666-8338-9f45ef04d557" /> <img width="1130" height="1437" alt="Image" src="https://github.com/user-attachments/assets/167bffab-2f7e-4005-874b-d3eff2499145" />

What steps can reproduce the bug?

  1. Install/update the OpenAI ChatGPT / Codex extension to 26.406.31014.
  2. Open Codex in the VS Code sidebar.
  3. Resize the sidebar to a narrow width.

Observed result: The Codex UI keeps a much larger minimum width than before. A horizontal scrollbar appears at the bottom, and some controls/labels are cut off.

For comparison:

  1. Roll back to 26.325.31654
  2. Open Codex in the sidebar again
  3. Resize to a similar width

In the older version, the layout is noticeably more compact and remains usable.

What is the expected behavior?

Codex should remain usable in a narrow VS Code sidebar.

The newer version should not require substantially more width than the older version, and it should not introduce horizontal overflow or clipping for the bottom controls.

Additional information

This appears to be a version-specific UI regression.

Comparison from the same machine and similar VS Code layout:

  • Broken: 26.406.31014
  • Works as expected: 26.325.31654

Visible downside in the newer version:

  • larger minimum sidebar width
  • horizontal scrollbar appears
  • bottom controls are harder to read/use
  • less space remains for the editor

extent analysis

TL;DR

The most likely fix is to roll back to the previous version of the IDE extension, 26.325.31654, which did not exhibit the UI regression.

Guidance

  • Verify the issue by comparing the behavior between versions 26.406.31014 and 26.325.31654 as described in the steps to reproduce the bug.
  • Check if there are any updates or patches available for the 26.406.31014 version that may address the UI regression.
  • Consider reporting the issue to the extension developers, providing the comparison screenshots and steps to reproduce, to help them identify and fix the problem.
  • If possible, test the extension in a different IDE or environment to see if the issue is specific to VS Code or Windows 10.

Example

No code snippet is provided as the issue appears to be related to the UI layout and version-specific regression.

Notes

The issue seems to be specific to the 26.406.31014 version of the IDE extension, and rolling back to the previous version may be the most straightforward workaround until a fix is available.

Recommendation

Apply workaround: Roll back to version 26.325.31654 until a fixed version is released, as this version does not exhibit the UI regression and provides a more compact layout.

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