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[Bug] Registration fails with an HTTP 429 (“Retry later”). #2411

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[Bug] Registration fails with an HTTP 429 (“Retry later”).#2411
@RokeJulianLockhart

Description

@RokeJulianLockhart
RokeJulianLockhart
opened on May 8, 2026

In order to bypass issues/2410, I have attempted to register. However, when I attempt to register, the process fails:

{
  "log": {
    "version": "1.2",
    "creator": {
      "name": "Firefox",
      "version": "152.0a1"
    },
    "browser": {
      "name": "Firefox",
      "version": "152.0a1"
    },
    "pages": [
      {
        "id": "page_1",
        "pageTimings": {
          "onContentLoad": 163,
          "onLoad": 170
        },
        "startedDateTime": "2026-05-08T13:26:26.398+01:00",
        "title": "https://jsfiddle.net/user/signup/"
      }
    ],
    "entries": [
      {
        "startedDateTime": "2026-05-08T13:26:26.398+01:00",
        "request": {
          "bodySize": 1489,
          "method": "POST",
          "url": "https://jsfiddle.net/user/signup/",
          "httpVersion": "HTTP/3",
          "headers": [
            {
              "name": "Host",
              "value": "jsfiddle.net"
            },
            {
              "name": "User-Agent",
              "value": "Mozilla/5.0 (X11; Linux x86_64; rv:152.0) Gecko/20100101 Firefox/152.0"
            },
            {
              "name": "Accept",
              "value": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"
            },
            {
              "name": "Accept-Language",
              "value": "en-GB,en;q=0.9,en-US;q=0.8"
            },
            {
              "name": "Accept-Encoding",
              "value": "gzip, deflate, br, zstd"
            },
            {
              "name": "Referer",
              "value": "https://jsfiddle.net/user/signup/"
            },
            {
              "name": "Content-Type",
              "value": "application/x-www-form-urlencoded"
            },
            {
              "name": "Content-Length",
              "value": "1489"
            },
            {
              "name": "Origin",
              "value": "https://jsfiddle.net"
            },
            {
              "name": "Connection",
              "value": "keep-alive"
            },
            {
              "name": "Cookie",
              "value": "csrftoken=ZeJ8ntq269v0tYz0odo4mUmjas3QEo%2FuvQxtEoc1ofmGxdwlreYo%2ByCXEkdrpTir%2BtS%2BScD0%2Ff%2FJm9VO4qLb4Q%3D%3D; _jsfiddle_session=g5hQb5tgEzCXudA%2FBbARhLT8DoSoRkWqtesRBZjARuPQUJGcylZpK%2Fshk0w8jI%2BXEA4yUTv2SzNuG%2FVcnyC5ZjylTDn16ywkEtlGf9Vz8LkPbDVBdkoahnHAgzpKTy0nMYW4dVzpC6Jf907pRYnypP2pNXO6yciLtlbbXPSq6NPAD2GcyenFMzGaSsh2InCpHxqmUueigxQTVpvgeTDCVPVjE1WUj%2BMbH4GW7HmkXc2mYoZhRMnmypX7wWUvEg5QrAvEXIk512BOA2R4nigv92ylF0gFvdsWGFq1aM%2FySbdg7GWPmhKRmo6m1ARDmpvAnOC3OgOYRJFLngTRvuNrRFUrcC4lqfukJYJX3gmvrKSorfNu2nPAtWEkXe%2F2KxCegYtM03%2FiTDJHebXmHmEbwRJr%2Fa8XTiRcYxF3mH9dF%2BB%2FJkQeFEr%2F9EuvifkpNbbGz4whaIKoeikadccW5b%2FvklBSZOyA--u5PXsdGLoXLW6t%2FU--DrHK7MRmHqSgagmL5EbKRg%3D%3D; cf_clearance=759u2V4pFr3EWWqEEFFkJhKvfILsfw4L4EIUf2F9FnI-1778243027-1.2.1.1-0uSvDXPFJcUtB7ZbVh8f32WOWcQSYmiVfNJ6zBdKWfkJP1amG2Da110YRsYbaz6zrHKSTouBhhlv44CCmjjhEV6mOyQAqo1UggbXqq3hWd.DwC.ieM7x1EipHZ72L1LhKgbrY4S.NM5Qc1Ql_NFjfntGmOSemCbPhTMb25gb8KI0b4EP0LmZRKDLeZOeHxu9z1pHWxPD_oz4T8mYQV8KUZOFag2DpGVjG5aP6DaZuJRL2JzF6Tc1HsdZFDb0YkKChhhEV1hg9YE7WB._s9u1QH5Lntvy7uJV0P6IEfFJCk2yufmFk7ZFoRQ2yL1bBQsbFMKAls8WsJve63Qo7BGK7w; JSFIDDLE_theme=dark"
            },
            {
              "name": "Upgrade-Insecure-Requests",
              "value": "1"
            },
            {
              "name": "Sec-Fetch-Dest",
              "value": "document"
            },
            {
              "name": "Sec-Fetch-Mode",
              "value": "navigate"
            },
            {
              "name": "Sec-Fetch-Site",
              "value": "same-origin"
            },
            {
              "name": "Sec-Fetch-User",
              "value": "?1"
            },
            {
              "name": "Idempotency-Key",
              "value": "\"12170240665927894253\""
            },
            {
              "name": "Priority",
              "value": "u=0, i"
            },
            {
              "name": "TE",
              "value": "trailers"
            }
          ],
          "cookies": [
            {
              "name": "csrftoken",
              "value": "ZeJ8ntq269v0tYz0odo4mUmjas3QEo/uvQxtEoc1ofmGxdwlreYo+yCXEkdrpTir+tS+ScD0/f/Jm9VO4qLb4Q=="
            },
            {
              "name": "_jsfiddle_session",
              "value": "g5hQb5tgEzCXudA/BbARhLT8DoSoRkWqtesRBZjARuPQUJGcylZpK/shk0w8jI+XEA4yUTv2SzNuG/VcnyC5ZjylTDn16ywkEtlGf9Vz8LkPbDVBdkoahnHAgzpKTy0nMYW4dVzpC6Jf907pRYnypP2pNXO6yciLtlbbXPSq6NPAD2GcyenFMzGaSsh2InCpHxqmUueigxQTVpvgeTDCVPVjE1WUj+MbH4GW7HmkXc2mYoZhRMnmypX7wWUvEg5QrAvEXIk512BOA2R4nigv92ylF0gFvdsWGFq1aM/ySbdg7GWPmhKRmo6m1ARDmpvAnOC3OgOYRJFLngTRvuNrRFUrcC4lqfukJYJX3gmvrKSorfNu2nPAtWEkXe/2KxCegYtM03/iTDJHebXmHmEbwRJr/a8XTiRcYxF3mH9dF+B/JkQeFEr/9EuvifkpNbbGz4whaIKoeikadccW5b/vklBSZOyA--u5PXsdGLoXLW6t/U--DrHK7MRmHqSgagmL5EbKRg=="
            },
            {
              "name": "cf_clearance",
              "value": "759u2V4pFr3EWWqEEFFkJhKvfILsfw4L4EIUf2F9FnI-1778243027-1.2.1.1-0uSvDXPFJcUtB7ZbVh8f32WOWcQSYmiVfNJ6zBdKWfkJP1amG2Da110YRsYbaz6zrHKSTouBhhlv44CCmjjhEV6mOyQAqo1UggbXqq3hWd.DwC.ieM7x1EipHZ72L1LhKgbrY4S.NM5Qc1Ql_NFjfntGmOSemCbPhTMb25gb8KI0b4EP0LmZRKDLeZOeHxu9z1pHWxPD_oz4T8mYQV8KUZOFag2DpGVjG5aP6DaZuJRL2JzF6Tc1HsdZFDb0YkKChhhEV1hg9YE7WB._s9u1QH5Lntvy7uJV0P6IEfFJCk2yufmFk7ZFoRQ2yL1bBQsbFMKAls8WsJve63Qo7BGK7w"
            },
            {
              "name": "JSFIDDLE_theme",
              "value": "dark"
            }
          ],
          "queryString": [],
          "headersSize": 1791,
          "postData": {
            "mimeType": "application/x-www-form-urlencoded",
            "params": [
              {
                "name": "authenticity_token",
                "value": "ZeJ8ntq269v0tYz0odo4mUmjas3QEo/uvQxtEoc1ofmGxdwlreYo+yCXEkdrpTir+tS+ScD0/f/Jm9VO4qLb4Q=="
              },
              {
                "name": "username",
                "value": "RokeJulianLockhart"
              },
              {
                "name": "email",
                "value": "vd1faviq@rokejulianlockhart.addy.io"
              },
              {
                "name": "password1",
                "value": "dr!lm73uOKD8epQUTc76UnXpPHIw&wQr8Tnh^r4$Flq!6YCx&7@^zNVOrZRNl@$DEqTGI@BJ@m7xlI66byyqD$1b!AHvSAUF*GGYA2aErEcTsoc5BQ#m%!xpctQMWEqd"
              },
              {
                "name": "g-recaptcha-response-data[signup]",
                "value": "0cAFcWeA7APc6nTMflo48Qi41Ct0JafI6byxeBdVLzK2GG2a1RpNYlY-j5X4tQGxufyrygHQrY6AX63vCM1sLVqt8RERMXVO5hsP5eISY6jLTiC4pWK-3nGjEfONmlNrNThoKZOqXp7ai3wz29TrqbqsBddo66QZz1n3eZBME0QsThlInuef_1x_YUpusxSGR6uly0gC013xJ599KwTXiavOyRbIBoV9HMTtBmMRz1PqJ8num-ylC-f8M4-tqJOMiihK_tBtHgB1EWX1doTlH_g1cMzdFlhvDvFg1q_tRcV7S3BmTGXUqDyVK8N4ZUe9xQrjqIBO8n5KMjapylaEphH2rbSyLkV_btmIFxjNEtHls7od29pfeXLWxhTd3BmbxTOqz9Eq_U4BX5k0yGtlSJ6Ugp6ZtjBFz-36BSlerBlzzDE_f6Ne40YnV52ubfMH-l8qz-aGCoehmcaqt7W9TDoDIMi7m0E12Fvhv0IAVnKyWjlyq8e0bfSJINqE0Rw8ek9RT-_nDbrWehooLlo-SswyWw74I-F5Si0H4-NU7v9bLA66nT4gBy1kC5NB7CqYKDnEXY3pGEtflHrbD3pKXdkhzpIpF4XuVnO9mLaiHcRUIQzs1tUZLPJD30VqyNakWlpRa4ijOPSS576STOxUM9nA50FVNpp1Q0eOaPu3TkC6F8-carBRLIjM5yqx1SAVEzthKOnKEdPjPP0f2PrJ7trVBP-yvKBNbgWjhL_lReY3rDVFXSU6mVBxbnz5zvLbWSzcwm5PJIZwCziPj1_o2aSPEBs03GLNP0BidLbtBZ5Q9F3CFMeIU034eonEHWGz5shT6XzhgeWlvvYR83M4v046yIkhMbzK4HzFPRvT1VrEZgv4dmJAAKSkRb14ITOJtcMeTtkWFdNnyUGV9rKtfWc9Y19PkZr9CBlJVkOKyjccv0qzk4cE62gOMbcavIe8ZXTDfJBZp0PV4p8KhfUdaH4HF6zCYCfofBYRSb0HA2ubtk6bGvHhyB9UNaerTIg3i0qwEdU6kzEPdPtO8Z70KgNmsJJ9lcarZbXg"
              },
              {
                "name": "g-recaptcha-response",
                "value": ""
              }
            ],
            "text": "authenticity_token=ZeJ8ntq269v0tYz0odo4mUmjas3QEo%2FuvQxtEoc1ofmGxdwlreYo%2ByCXEkdrpTir%2BtS%2BScD0%2Ff%2FJm9VO4qLb4Q%3D%3D&username=RokeJulianLockhart&email=vd1faviq%40rokejulianlockhart.addy.io&password1=dr%21lm73uOKD8epQUTc76UnXpPHIw%26wQr8Tnh%5Er4%24Flq%216YCx%267%40%5EzNVOrZRNl%40%24DEqTGI%40BJ%40m7xlI66byyqD%241b%21AHvSAUF*GGYA2aErEcTsoc5BQ%23m%25%21xpctQMWEqd&g-recaptcha-response-data%5Bsignup%5D=0cAFcWeA7APc6nTMflo48Qi41Ct0JafI6byxeBdVLzK2GG2a1RpNYlY-j5X4tQGxufyrygHQrY6AX63vCM1sLVqt8RERMXVO5hsP5eISY6jLTiC4pWK-3nGjEfONmlNrNThoKZOqXp7ai3wz29TrqbqsBddo66QZz1n3eZBME0QsThlInuef_1x_YUpusxSGR6uly0gC013xJ599KwTXiavOyRbIBoV9HMTtBmMRz1PqJ8num-ylC-f8M4-tqJOMiihK_tBtHgB1EWX1doTlH_g1cMzdFlhvDvFg1q_tRcV7S3BmTGXUqDyVK8N4ZUe9xQrjqIBO8n5KMjapylaEphH2rbSyLkV_btmIFxjNEtHls7od29pfeXLWxhTd3BmbxTOqz9Eq_U4BX5k0yGtlSJ6Ugp6ZtjBFz-36BSlerBlzzDE_f6Ne40YnV52ubfMH-l8qz-aGCoehmcaqt7W9TDoDIMi7m0E12Fvhv0IAVnKyWjlyq8e0bfSJINqE0Rw8ek9RT-_nDbrWehooLlo-SswyWw74I-F5Si0H4-NU7v9bLA66nT4gBy1kC5NB7CqYKDnEXY3pGEtflHrbD3pKXdkhzpIpF4XuVnO9mLaiHcRUIQzs1tUZLPJD30VqyNakWlpRa4ijOPSS576STOxUM9nA50FVNpp1Q0eOaPu3TkC6F8-carBRLIjM5yqx1SAVEzthKOnKEdPjPP0f2PrJ7trVBP-yvKBNbgWjhL_lReY3rDVFXSU6mVBxbnz5zvLbWSzcwm5PJIZwCziPj1_o2aSPEBs03GLNP0BidLbtBZ5Q9F3CFMeIU034eonEHWGz5shT6XzhgeWlvvYR83M4v046yIkhMbzK4HzFPRvT1VrEZgv4dmJAAKSkRb14ITOJtcMeTtkWFdNnyUGV9rKtfWc9Y19PkZr9CBlJVkOKyjccv0qzk4cE62gOMbcavIe8ZXTDfJBZp0PV4p8KhfUdaH4HF6zCYCfofBYRSb0HA2ubtk6bGvHhyB9UNaerTIg3i0qwEdU6kzEPdPtO8Z70KgNmsJJ9lcarZbXg&g-recaptcha-response="
          }
        },
        "response": {
          "status": 429,
          "statusText": "",
          "httpVersion": "HTTP/3",
          "headers": [
            {
              "name": "server",
              "value": "cloudflare"
            },
            {
              "name": "date",
              "value": "Fri, 08 May 2026 12:26:26 GMT"
            },
            {
              "name": "content-type",
              "value": "text/plain"
            },
            {
              "name": "content-length",
              "value": "12"
            },
            {
              "name": "cache-control",
              "value": "no-cache"
            },
            {
              "name": "x-request-id",
              "value": "5dfc0a23-64f0-4778-bfa9-408eb6ba5979"
            },
            {
              "name": "x-runtime",
              "value": "0.001684"
            },
            {
              "name": "strict-transport-security",
              "value": "max-age=63072000; includeSubDomains"
            },
            {
              "name": "vary",
              "value": "Origin"
            },
            {
              "name": "priority",
              "value": "u=0,i"
            },
            {
              "name": "cf-cache-status",
              "value": "DYNAMIC"
            },
            {
              "name": "nel",
              "value": "{\"report_to\":\"cf-nel\",\"success_fraction\":0.0,\"max_age\":604800}"
            },
            {
              "name": "x-frame-options",
              "value": "ALLOWALL"
            },
            {
              "name": "server-timing",
              "value": "cfCacheStatus;desc=\"DYNAMIC\""
            },
            {
              "name": "server-timing",
              "value": "cfEdge;dur=75,cfOrigin;dur=6"
            },
            {
              "name": "server-timing",
              "value": "cfExtPri"
            },
            {
              "name": "report-to",
              "value": "{\"group\":\"cf-nel\",\"max_age\":604800,\"endpoints\":[{\"url\":\"https://a.nel.cloudflare.com/report/v4?s=auW%2FR0OJvHpPFlhlTaUA0lbjxf5DxR35%2BJthEkMXahOn7QSDitSwT5wxBGc33lR9e3gRqaofEjwac0kqNbmY1CkSI%2BYTLDKMKdk7UrmzR1rxOEDKoff0VazdCQpOjKk%3D\"}]}"
            },
            {
              "name": "cf-ray",
              "value": "9f8873eb1d6bef52-LHR"
            },
            {
              "name": "alt-svc",
              "value": "h3=\":443\"; ma=86400"
            }
          ],
          "cookies": [],
          "content": {
            "mimeType": "text/plain",
            "size": 12,
            "text": "Retry later\n"
          },
          "redirectURL": "",
          "headersSize": 828,
          "bodySize": 840
        },
        "cache": {},
        "timings": {
          "blocked": -1,
          "dns": 0,
          "connect": 0,
          "ssl": 0,
          "send": 0,
          "wait": 101,
          "receive": 0
        },
        "time": 101,
        "_securityState": "secure",
        "serverIPAddress": "172.67.158.9",
        "connection": "443",
        "pageref": "page_1"
      },
      {
        "startedDateTime": "2026-05-08T13:26:26.706+01:00",
        "request": {
          "bodySize": 0,
          "method": "GET",
          "url": "https://jsfiddle.net/favicon.ico",
          "httpVersion": "HTTP/3",
          "headers": [
            {
              "name": "Host",
              "value": "jsfiddle.net"
            },
            {
              "name": "User-Agent",
              "value": "Mozilla/5.0 (X11; Linux x86_64; rv:152.0) Gecko/20100101 Firefox/152.0"
            },
            {
              "name": "Accept",
              "value": "image/avif,image/jxl,image/webp,image/png,image/svg+xml,image/*;q=0.8,*/*;q=0.5"
            },
            {
              "name": "Accept-Language",
              "value": "en-GB,en;q=0.9,en-US;q=0.8"
            },
            {
              "name": "Accept-Encoding",
              "value": "gzip, deflate, br, zstd"
            },
            {
              "name": "Referer",
              "value": "https://jsfiddle.net/user/signup/"
            },
            {
              "name": "Connection",
              "value": "keep-alive"
            },
            {
              "name": "Cookie",
              "value": "csrftoken=ZeJ8ntq269v0tYz0odo4mUmjas3QEo%2FuvQxtEoc1ofmGxdwlreYo%2ByCXEkdrpTir%2BtS%2BScD0%2Ff%2FJm9VO4qLb4Q%3D%3D; _jsfiddle_session=g5hQb5tgEzCXudA%2FBbARhLT8DoSoRkWqtesRBZjARuPQUJGcylZpK%2Fshk0w8jI%2BXEA4yUTv2SzNuG%2FVcnyC5ZjylTDn16ywkEtlGf9Vz8LkPbDVBdkoahnHAgzpKTy0nMYW4dVzpC6Jf907pRYnypP2pNXO6yciLtlbbXPSq6NPAD2GcyenFMzGaSsh2InCpHxqmUueigxQTVpvgeTDCVPVjE1WUj%2BMbH4GW7HmkXc2mYoZhRMnmypX7wWUvEg5QrAvEXIk512BOA2R4nigv92ylF0gFvdsWGFq1aM%2FySbdg7GWPmhKRmo6m1ARDmpvAnOC3OgOYRJFLngTRvuNrRFUrcC4lqfukJYJX3gmvrKSorfNu2nPAtWEkXe%2F2KxCegYtM03%2FiTDJHebXmHmEbwRJr%2Fa8XTiRcYxF3mH9dF%2BB%2FJkQeFEr%2F9EuvifkpNbbGz4whaIKoeikadccW5b%2FvklBSZOyA--u5PXsdGLoXLW6t%2FU--DrHK7MRmHqSgagmL5EbKRg%3D%3D; cf_clearance=759u2V4pFr3EWWqEEFFkJhKvfILsfw4L4EIUf2F9FnI-1778243027-1.2.1.1-0uSvDXPFJcUtB7ZbVh8f32WOWcQSYmiVfNJ6zBdKWfkJP1amG2Da110YRsYbaz6zrHKSTouBhhlv44CCmjjhEV6mOyQAqo1UggbXqq3hWd.DwC.ieM7x1EipHZ72L1LhKgbrY4S.NM5Qc1Ql_NFjfntGmOSemCbPhTMb25gb8KI0b4EP0LmZRKDLeZOeHxu9z1pHWxPD_oz4T8mYQV8KUZOFag2DpGVjG5aP6DaZuJRL2JzF6Tc1HsdZFDb0YkKChhhEV1hg9YE7WB._s9u1QH5Lntvy7uJV0P6IEfFJCk2yufmFk7ZFoRQ2yL1bBQsbFMKAls8WsJve63Qo7BGK7w; JSFIDDLE_theme=dark"
            },
            {
              "name": "Sec-Fetch-Dest",
              "value": "image"
            },
            {
              "name": "Sec-Fetch-Mode",
              "value": "no-cors"
            },
            {
              "name": "Sec-Fetch-Site",
              "value": "same-origin"
            }
          ],
          "cookies": [
            {
              "name": "csrftoken",
              "value": "ZeJ8ntq269v0tYz0odo4mUmjas3QEo/uvQxtEoc1ofmGxdwlreYo+yCXEkdrpTir+tS+ScD0/f/Jm9VO4qLb4Q=="
            },
            {
              "name": "_jsfiddle_session",
              "value": "g5hQb5tgEzCXudA/BbARhLT8DoSoRkWqtesRBZjARuPQUJGcylZpK/shk0w8jI+XEA4yUTv2SzNuG/VcnyC5ZjylTDn16ywkEtlGf9Vz8LkPbDVBdkoahnHAgzpKTy0nMYW4dVzpC6Jf907pRYnypP2pNXO6yciLtlbbXPSq6NPAD2GcyenFMzGaSsh2InCpHxqmUueigxQTVpvgeTDCVPVjE1WUj+MbH4GW7HmkXc2mYoZhRMnmypX7wWUvEg5QrAvEXIk512BOA2R4nigv92ylF0gFvdsWGFq1aM/ySbdg7GWPmhKRmo6m1ARDmpvAnOC3OgOYRJFLngTRvuNrRFUrcC4lqfukJYJX3gmvrKSorfNu2nPAtWEkXe/2KxCegYtM03/iTDJHebXmHmEbwRJr/a8XTiRcYxF3mH9dF+B/JkQeFEr/9EuvifkpNbbGz4whaIKoeikadccW5b/vklBSZOyA--u5PXsdGLoXLW6t/U--DrHK7MRmHqSgagmL5EbKRg=="
            },
            {
              "name": "cf_clearance",
              "value": "759u2V4pFr3EWWqEEFFkJhKvfILsfw4L4EIUf2F9FnI-1778243027-1.2.1.1-0uSvDXPFJcUtB7ZbVh8f32WOWcQSYmiVfNJ6zBdKWfkJP1amG2Da110YRsYbaz6zrHKSTouBhhlv44CCmjjhEV6mOyQAqo1UggbXqq3hWd.DwC.ieM7x1EipHZ72L1LhKgbrY4S.NM5Qc1Ql_NFjfntGmOSemCbPhTMb25gb8KI0b4EP0LmZRKDLeZOeHxu9z1pHWxPD_oz4T8mYQV8KUZOFag2DpGVjG5aP6DaZuJRL2JzF6Tc1HsdZFDb0YkKChhhEV1hg9YE7WB._s9u1QH5Lntvy7uJV0P6IEfFJCk2yufmFk7ZFoRQ2yL1bBQsbFMKAls8WsJve63Qo7BGK7w"
            },
            {
              "name": "JSFIDDLE_theme",
              "value": "dark"
            }
          ],
          "queryString": [],
          "headersSize": 0
        },
        "response": {
          "status": 200,
          "statusText": "",
          "httpVersion": "HTTP/3",
          "headers": [
            {
              "name": "server",
              "value": "cloudflare"
            },
            {
              "name": "date",
              "value": "Fri, 08 May 2026 12:25:34 GMT"
            },
            {
              "name": "content-type",
              "value": "image/x-icon"
            },
            {
              "name": "content-length",
              "value": "0"
            },
            {
              "name": "last-modified",
              "value": "Wed, 06 May 2026 12:21:20 GMT"
            },
            {
              "name": "etag",
              "value": "\"69fb3240-0\""
            },
            {
              "name": "accept-ranges",
              "value": "bytes"
            },
            {
              "name": "priority",
              "value": "u=6,i=?0"
            },
            {
              "name": "age",
              "value": "2097"
            },
            {
              "name": "cache-control",
              "value": "max-age=14400"
            },
            {
              "name": "cf-cache-status",
              "value": "HIT"
            },
            {
              "name": "nel",
              "value": "{\"report_to\":\"cf-nel\",\"success_fraction\":0.0,\"max_age\":604800}"
            },
            {
              "name": "x-frame-options",
              "value": "ALLOWALL"
            },
            {
              "name": "speculation-rules",
              "value": "\"/cdn-cgi/speculation\""
            },
            {
              "name": "report-to",
              "value": "{\"group\":\"cf-nel\",\"max_age\":604800,\"endpoints\":[{\"url\":\"https://a.nel.cloudflare.com/report/v4?s=KOpTOHF2HmLjwmupJ7v%2BWMOpPLYHx3G%2F6escY6CcMt9hGmTkEYLVcl4q817OaUd5DXqypJzmgkSOxH%2FNfLXzhBXBW5Wisgk8LC52IaKn9Y3v%2Bay1USfyMWDLlYHPTKo%3D\"}]}"
            },
            {
              "name": "cf-ray",
              "value": "9f8872a54f10ef52-LHR"
            },
            {
              "name": "alt-svc",
              "value": "h3=\":443\"; ma=86400"
            },
            {
              "name": "server-timing",
              "value": "cfExtPri"
            }
          ],
          "cookies": [],
          "content": {
            "mimeType": "image/x-icon",
            "size": 0,
            "encoding": "base64",
            "text": ""
          },
          "redirectURL": "",
          "headersSize": 0,
          "bodySize": 0
        },
        "cache": {},
        "timings": {
          "blocked": 0,
          "dns": 0,
          "ssl": 0,
          "connect": 0,
          "send": 0,
          "wait": 0,
          "receive": 0
        },
        "time": 0,
        "_securityState": "secure",
        "pageref": "page_1"
      }
    ]
  }
}

To ensure that I wasn't being penalised for my choice of PI, I have tried 128, 64, 32, and 16-character passwords, and I have tried an @rokeJulianLockhart.addy.IO and @PM.me e-mail address (albeit, with an RFC-compliant sub-address). None bypass this problem.

My Environment

  1. Details

    #!/usr/bin/env sh
rpm -qf $(command -v firefox-nightly) \
	--queryformat "$(
		cat <<'EOF'
Name: %{NAME}
Version: %{VERSION}
Release: %{RELEASE}
Architecture: %{ARCH}
Install Date: %{INSTALLTIME:date}
Size: %{SIZE}
Signature: %{SIGPGP:pgpsig}
Source RPM: %{SOURCERPM}
Build Date: %{BUILDTIME:date}
Build Host: %{BUILDHOST}
Packager: %{PACKAGER}
Vendor: %{VENDOR}
EOF
	)"$'\n' | yq -P

  2. Name: firefox-nightly
Version: 152.0a1
Release: 20260507021236
Architecture: x86_64
Install Date: Thu 07 May 2026 11:29:41 BST
Size: 385629459
Signature: (none)
Source RPM: firefox-nightly-152.0a1-20260507021236.src.rpm
Build Date: Thu 07 May 2026 05:22:44 BST
Build Host: ba475d650d27
Packager: (none)
Vendor: Mozilla

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