Cannot open index.html in Codex app preview

[dewgie-bot]

What version of the Codex App are you using (From “About Codex” dialog)?

Version 26.415.30602 (1773)

What subscription do you have?

Pro

What platform is your computer?

Darwin 25.3.0 arm64 arm

What issue are you seeing?

When I click index.html in Codex Explorer, nothing happens (no open and no preview). Any other file opens and shows its contents normally.

What steps can reproduce the bug?

Uploaded thread: 4b13e1d7-a668-4be6-888b-ec23cf182bca

1. Open a project containing an index.html file.
2. In Codex Explorer, click index.html.
3. No preview opens and no file content panel loads.
4. Click other files (for example .js, .css, or .md) and they open normally, confirming the issue is specific to index.html.

What is the expected behavior?

Codex should open and render index.html in the preview pane (or launch an actual preview of the page) without errors.

Additional information

This issue report was written with AI assistance.

Issue is reproducible in this thread context (session reference already included in Steps). No console/screenshot attached.

[github-actions]

Potential duplicates detected. Please review them and close your issue if it is a duplicate.

• [Codex Desktop][macOS] "Open in IntelliJ" context action missing for .html file links (works for .java/.xml) #18315

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