Chat file links are not clickable, and Open in PyCharm fails

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

26.313.41036

What subscription do you have?

team

What platform is your computer?

Microsoft Windows NT 10.0.26200.0 x64

What issue are you seeing?

Summary
In the Windows Codex desktop app, file links inside the chat do nothing when clicked. Also, clicking Open in PyCharm fails if PyCharm is already running, even though the PyCharm process is healthy and responsive.

Environment

Windows 11
Codex desktop app for Windows
PyCharm 2025.3.3
Workspace: C:\Users\xxzz\code\quant-ai
Primary issue: chat file links do nothing
Examples:

plain path references like data/exchanges/byb_perp.py:136 are not clickable
even local file links rendered by the assistant also do nothing when clicked
Actual result

no action
no error
file is not opened in Codex
file is not opened in PyCharm
Expected result

clicking a file link in chat should open the target file, ideally in the configured editor
Secondary issue: Open in PyCharm fails
If PyCharm is already running and the project is already open, Open in PyCharm shows:

Internal error

com.intellij.platform.ide.bootstrap.DirectoryLock$CannotActivateException: Process "C:\Program Files\JetBrains\PyCharm 2025.3.3\bin\pycharm64.exe" (...) is still running and does not respond.
Important observation
PyCharm itself is not actually hung. Launching a file directly from the command line works:

& 'C:\Program Files\JetBrains\PyCharm 2025.3.3\bin\pycharm64.exe' --line 136 'C:\Users\xxzz\code\quant-ai\data\exchanges\byb_perp.py'
PyCharm logs also show that external commands are sometimes received successfully, and the existing project is reused. So this looks like a Codex integration / error-handling issue rather than a dead PyCharm process.

What I already tried

restarted PyCharm
removed JetBrains lock/state files
reinstalled PyCharm
updated Codex local config to point to PyCharm 2025.3.3 instead of an old PyCharm install
The chat file-link issue still remains, and Open in PyCharm still fails.

What steps can reproduce the bug?

1. Open Codex desktop app on Windows.
2. Open a workspace, for example C:\Users\xxzz\code\quant-ai.
3. Start or continue a chat where the assistant references a local file.
4. Click a file reference in the chat.
5. Observe that nothing happens.

For the related PyCharm issue:

1. Open PyCharm 2025.3.3.
2. Open the same project/workspace in PyCharm.
3. Go back to Codex.
4. Click Open in PyCharm in the top-right corner.
5. Observe the DirectoryLock$CannotActivateException error saying the running PyCharm process “does not respond.”

What is the expected behavior?

_No response_

Additional information

_No response_