Sometimes generates invalid cross signing keys

[t3chguy]

See trace.zip on https://trace.playwright.dev/

{
  "master_key": {
    "keys": {
      "ed25519:YM2iIrG/2po5w6kUau/ECKDLwv4nlh4Nz2Xvxai7u/M": "YM2iIrG/2po5w6kUau/ECKDLwv4nlh4Nz2Xvxai7u/M"
    },
    "signatures": {
      "@bot_0052:localhost": {
        "ed25519:RJTFAJSKWR": "CvCG+vEd78c/8mdjqR54Ev8BHpFZCgvioEw97JEi1sDATE00pkygs7VMLOfA+Zi+HEfXarXNGAYhLTpbtdBhBw",
        "ed25519:YM2iIrG/2po5w6kUau/ECKDLwv4nlh4Nz2Xvxai7u/M": "Dz8R5C/xTHtHQcF6wMDXX23ySID7GtR22HDqpDVzUKcxUvZ9t+Wbt/v8k+3CTmTpklgMIihUoaA8ER25mu61Bg"
      }
    },
    "usage": [
      "master"
    ],
    "user_id": "@bot_0052:localhost"
  },
  "self_signing_key": {
    "keys": {
      "ed25519:wZCSTse74f4O4RzT0uLlZZMtv7YkDvFpt2V22FGn3hc": "wZCSTse74f4O4RzT0uLlZZMtv7YkDvFpt2V22FGn3hc"
    },
    "signatures": {
      "@bot_0052:localhost": {
        "ed25519:YM2iIrG/2po5w6kUau/ECKDLwv4nlh4Nz2Xvxai7u/M": "6jXZ3mF+Al/lwToVhW6h8SjBhXpICJEbeCeXIFtBkom21JU/x6uZHvpfrkk/9BYzn90xDAcu/CiddMURVM5aCA"
      }
    },
    "usage": [
      "self_signing"
    ],
    "user_id": "@bot_0052:localhost"
  },
  "user_signing_key": {
    "keys": {
      "ed25519:3TkTRFXPl8u8WluMzt5r+TusRHWFz3jZ/ggJYS1aWWw": "3TkTRFXPl8u8WluMzt5r+TusRHWFz3jZ/ggJYS1aWWw"
    },
    "signatures": {
      "@bot_0052:localhost": {
        "ed25519:YM2iIrG/2po5w6kUau/ECKDLwv4nlh4Nz2Xvxai7u/M": "2z++ELYjBOE+cbQYer8v/d0mAcp/KKJ3oNe9mq17X68C7rVk9UAIOGdIm2TE486XW2R7SSFerKxm3sqWONS0Dg"
      }
    },
    "usage": [
      "user_signing"
    ],
    "user_id": "@bot_0052:localhost"
  },
  "auth": {
    "type": "m.login.password",
    "identifier": {
      "type": "m.id.user",
      "user": "@bot_0052:localhost"
    },
    "password": "password_53"
  }
}

Results in

{
  "errcode": "M_INVALID_SIGNATURE",
  "error": "Invalid signature on self_signing key"
}

with underlying error

signedjson.sign.SignatureVerifyException: Unable to verify signature for @bot_0052:localhost: <class 'nacl.exceptions.BadSignatureError'> Signature was forged or corrupt