Can anyone reproduce this ChatGPT Work PDF access bug?

A user reported a PDF attachment access bug in the ChatGPT desktop app on macOS, version 26.930.31730. Initially, a PDF could be read locally but not retrieved when running "on the cloud." After moving the conversation to a project, downloading the PDF via its upload ID failed with an authorization error, though the PDF was accessible in the local attachments directory. There was also a mismatch between the selected project and the active workspace, leading to a GitHub issue (openai/codex/issues/50690) being opened.

This report details a specific PDF access bug in ChatGPT's desktop app, unlike general reports, by providing steps to reproduce it and linking to the GitHub issue.