Windows app freezes / may trigger BSOD when dragging a folder into chat

What version of the Codex App are you using?

26.519.5221.0

Inferred from the running process path:
C:\Program Files\WindowsApps\OpenAI.Codex_26.519.5221.0_x64__2p2nqsd0c76g0\app\Codex.exe

What subscription do you have?

Not provided.

What platform is your computer?

Microsoft Windows NT 10.0.26200.0 x64

Get-ComputerInfo also reports: Windows 10 Home China.

What issue are you seeing?

On the Windows Codex desktop app, dragging a folder from File Explorer into the chat window can freeze the entire Codex UI. The user also reports that this may be accompanied by a Windows blue screen, after which the machine can only be recovered by rebooting.

This is a severe failure mode because a normal drag-and-drop action in the chat window can result in total UI lockup and possible system crash/restart.

What steps can reproduce the bug?

1. Launch Codex desktop app on Windows.
2. Open any chat.
3. In Windows File Explorer, select a folder.
4. Drag the folder into the Codex chat window / input area.
5. Drop it, or hover/drop as part of the normal drag-and-drop flow.

Observed result: the Codex desktop interface freezes. The reporter says the system may blue-screen and require reboot.

What is the expected behavior?

Dragging a folder into the chat window should not freeze the UI or destabilize Windows. The app should either handle folder drops safely or reject them with a clear validation/error message.

Additional information

I searched open issues for similar terms like "drag folder freeze blue screen windows desktop" and did not find an obvious duplicate.

I also checked local Windows event logs for recent System events with IDs 1001/41 and did not find a matching event from the simple filter, so no BSOD stop code is available in this report. Local Codex log files exist, but I am not attaching them publicly because they may contain private session data.

Potential area to investigate: Windows drag-and-drop handling for directory payloads, especially whether folder enumeration or validation is happening synchronously on the UI thread or triggering shell/thumbnail/provider behavior during drag enter/drop.