Codex panel not showing in Dev Container / Remote Containers (Linux)
Open 💬 2 comments Opened Apr 28, 2026 by john-fields
💡 Likely answer: A maintainer (github-actions[bot], contributor)
responded on this thread — see the highlighted reply below.
What version of the IDE extension are you using?
26.422.62136
What subscription do you have?
Reverting to version 26.417.40842 resolves the issue.
Which IDE are you using?
vs code 1.117.0
What platform is your computer?
Microsoft Windows NT 10.0.26200.0 x64
What issue are you seeing?
Codex panel is missing in Linux dev container (no UI rendered) on version 26.422.62136. Works correctly on 26.417.40842. Likely a regression in container/remote environments.
What steps can reproduce the bug?
- Open VS Code
- Install Codex extension version 26.422.62136
- Open a project in a Linux dev container (Remote - Containers)
- Wait for the container to fully start and extensions to load
- Check the sidebar or attempt to open the Codex panel
Result:
The Codex panel does not appear and no UI is rendered.
Expected:
The Codex panel should be visible and accessible in the sidebar.
Note:
Reverting to version 26.417.40842 restores normal behavior in the same environment.
What is the expected behavior?
_No response_
Additional information
_No response_
2 Comments
Potential duplicates detected. Please review them and close your issue if it is a duplicate.
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Reproducing on Linux, not Windows.
Codex fails in php:8.4-fpm-alpine, works immediately after switching to php:8.4-fpm (Debian/glibc).
Environment:
VS Code latest (1.124.0)
Remote SSH to Ubuntu host
Dev Container
Alpine-based container
Latest Codex extension:
Auth succeeds
Codex app-server starts
Sidebar remains blank / unusable
Version 26.417.40842:
UI renders
Submitting a prompt throws TypeError: n is not iterable
Claude Code works correctly in the same dev container.
EDIT:
Codex fails in php:8.4-fpm-alpine, works immediately after switching to php:8.4-fpm (Debian/glibc).