🖐 unexpected status 400 Bad Request

What version of Codex is running?

codex-cli 0.22.0

Which model were you using?

gpt-5

What platform is your computer?

Linux 6.14.0-27-generic x86_64 x86_64

What steps can reproduce the bug?

codex just output:

🖐 unexpected status 400 Bad Request: {
"error": {
"message": "Invalid type for 'input': expected string, but got array.",
"type": "invalid_request_error",
"param": "input",
"code": "invalid_type"
}
}

no matter the request

Additional information

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