Windows app crashes when clicking a newly-created file in the review pane

Summary

The Codex Windows app consistently exits/crashes when clicking a newly-created file entry in the review/diff pane while the file is still shown as being created.

Reproduction

1. Use the Codex Windows desktop app in a local project.
2. Ask Codex to create a new file.
3. In the review/diff pane, click the blue file entry while it is shown as 正在创建 install-macos.sh +5 -0.
4. The Codex app immediately exits/crashes.

The user reports this reproduces every time.

Expected behavior

Clicking the pending/new file entry should open the diff or file preview, or show a recoverable error if the file is not yet available.

Actual behavior

The entire Codex app exits/crashes.

Environment

• OS: Windows 10.0.26200.8655
• Codex Windows app package observed in executable path: OpenAI.Codex_26.623.11225.0_x64__2p2nqsd0c76g0
• Agent shell: PowerShell
• UI language/context: Chinese UI text observed (正在创建)

Local observations

• The clicked item appeared to be a pending/new file diff entry, not a normal already-opened file.
• After restart/checking the workspace, install-macos.sh was not present on disk.
• The project directory contained an empty .git directory. The bundled Git executable reported:

fatal: not a git repository (or any of the parent directories): .git

This may or may not be related, but it could be relevant because the crash happens from the review/diff pane.

Notes

No app logs are attached here to avoid exposing local/private paths or session content. The user can submit logs through in-app /feedback if needed.