Pasting images into Codex sessions stopped working after upgrading to MacOS 27

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Describe the bug

After upgrading my Mac to macOS 27, pasting images into Codex CLI sessions in Warp stopped working. With an image on the clipboard, pressing Ctrl+V inside a running Codex session does nothing: no image placeholder and no error. It was working before, and it still works in Claude Code sessions in Warp.

To reproduce

Environment: macOS 27.0 (26A428), Warp 0.2026.09.09.08.26.02, Codex CLI 0.154.0 (installed with pnpm add -g @openai/codex), Claude Code 2.1.273.

1. Copy an image to the clipboard (for example Ctrl+Shift+Cmd+4, or right-click an image in Chrome → Copy Image).
2. In a Warp tab, start Codex: codex
3. Click into the Codex input and press Ctrl+V.
4. Actual: nothing happens. No [Image #1] placeholder, no error.
5. Expected: the image is attached, as it was before and as it still is in Claude Code.
6. For comparison, repeat steps 1–3 with claude: the image attaches correctly.

To see what Warp sends to the program, run this in a Warp tab, press Ctrl+V with an image on the clipboard, then press q:

node -e 'const w=s=>process.stdout.write(s);w("\x1b[?2004h\x1b[>7u");process.stdin.setRawMode(true);process.stdin.on("data",b=>{w([...b].map(x=>x.toString(16).padStart(2,"0")).join(" ")+"\r\n");if(b.length===1&&b[0]===113){w("\x1b[<u\x1b[?2004l");process.exit()}})'

It prints 1b 5b 32 30 30 7e 1b 5b 32 30 31 7e (an empty bracketed paste) instead of 16 (Ctrl+V). For a generic program that may be intended, but Codex gets the same treatment, so its image paste never fires.

If the form has more fields:

• Expected behavior: With image data on the clipboard, Ctrl+V in a Codex session should reach Codex, the same way it does for Claude Code, so Codex can attach the image.
• Workaround: codex -i image.png attaches an image without using the clipboard, but only for the first message.

Expected behavior

No response

Screenshots, videos, and logs

No response

Operating system (OS)

macOS

Operating system and version

27.0.0

Shell Version

zsh 5.9 (arm64-apple-darwin26.0)

Current Warp version

v0.2026.09.09.08.26.stable_02

Regression

Yes, this bug started recently or with an X Warp version

Recent working Warp date

15 Sept 2026

Additional context

No response

Does this block you from using Warp daily?

Yes, this issue prevents me from using Warp daily.

Is this an issue only in Warp?

Yes, I confirmed that this only happens in Warp, not other terminals.

Warp Internal (ignore): linear-label:b9d78064-c89e-4973-b153-5178a31ee54e

No response