Clipboard copy/paste loses ordered and bulleted list formatting

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

26.623.141536, build 4753

What subscription do you have?

Pro $200

What platform is your computer?

Darwin 25.5.0 arm64 arm

What issue are you seeing?

Codex loses list formatting through clipboard copy/paste. This affects ordered lists and bulleted lists, and reproduces both in the Codex macOS desktop app and Codex cloud.

The strongest repro is entirely inside the Codex macOS app: copy a numbered or bulleted list from a Codex response, then paste it back into the same Codex chat composer. The list markers are lost.

This also reproduces when copying a formatted list from Outlook in Chrome into the Codex chat composer. The same Outlook-copied content preserves list formatting when pasted into Slack and macOS Notes.

What steps can reproduce the bug?

Repro 1: Paste from Outlook in Chrome into Codex

1. Open an email in Outlook in Chrome that contains a numbered list.
2. Copy the formatted numbered list.
3. Paste it into the main Codex chat composer.

Expected pasted text:

1. First item
2. Second item
3. Third item

Actual pasted text:

First item
Second item
Third item

The list markers are removed entirely. The same copied content preserves numbered-list formatting when pasted into Slack and macOS Notes.

Repro 2: Copy a Codex response back into Codex

1. In the Codex macOS app, generate or view a response containing a numbered or bulleted list.
2. Manually select the list text in the Codex response.
3. Copy it.
4. Paste it back into the chat box in the same Codex session.

Expected: list markers are preserved.
Actual: list markers are lost.

Repro 3: Codex cloud

The same copy/paste formatting loss also occurs on Codex cloud in Chrome.

Repro 4: Bulleted lists

The same formatting loss happens with bulleted lists too, not only numbered lists.

Tried:

• Holding Shift while pasting in the Codex macOS app does not change the result.
• There is no visible "Paste and Match Style" option in the Codex composer.

What is the expected behavior?

Codex should preserve list structure during clipboard operations:

• When pasting HTML/RTF ordered or unordered lists into Codex, convert them into Markdown/plain text list markers such as 1., 2., 3. or -.
• When copying rendered Codex responses, put valid plain-text and/or HTML clipboard payloads on the clipboard so lists round-trip correctly when pasted into Codex or other apps.

Additional information

Environment:

• Codex macOS app: 26.623.141536, build 4753
• macOS: 26.5.1, build 25F80
• Platform output from uname -mprs: Darwin 25.5.0 arm64 arm
• Browser for cloud reproduction: Google Chrome 150.0.7871.115
• Source app for original paste reproduction: Outlook in Chrome, response in codex app itself
• Subscription: PRO $200

This appears to be a Codex clipboard/copy-paste handling issue rather than an Outlook-specific issue, because it reproduces when copying a Codex response and pasting it back into Codex.