bugs on flights.google.com

[gcb]

Prerequisites

failure on flights.google.com

• [X] I am running the latest version
• [X] I checked the documentation and found no answer
• [X] I checked to make sure that this issue has not already been filed

Expected Behavior

Current Behavior

Script hangs (browser shows the Stop Script UI) on parts of the code which start as:

 (function(){
      const inject = (spoofContext) => {

right after entering origin or destination airport.

Relevant settings

(mostly default, don't remember changing much of them)

{
  "config": {
    "enabled": true,
    "notificationsEnabled": false,
    "theme": "light",
    "reloadIPStartupDelay": 0,
    "hasPrivacyPermission": false
  },
  "excluded": [
...
  ],
  "headers": {
    "blockEtag": false,
    "enableDNT": false,
    "referer": {
      "disabled": false,
      "xorigin": 1,
      "trimming": 1
    },
    "spoofAcceptLang": {
      "enabled": false,
      "value": "default"
    },
    "spoofIP": {
      "enabled": false,
      "option": 0,
      "rangeFrom": "",
      "rangeTo": ""
    }
  },
  "ipRules": [],
  "options": {
    "cookieNotPersistent": false,
    "cookiePolicy": "allow_all",
    "blockMediaDevices": false,
    "blockCSSExfil": true,
    "disableWebRTC": false,
    "firstPartyIsolate": false,
    "limitHistory": true,
    "protectKBFingerprint": {
      "enabled": true,
      "delay": 1
    },
    "protectWinName": true,
    "resistFingerprinting": false,
    "screenSize": "1600x900",
    "spoofAudioContext": true,
    "spoofClientRects": true,
    "spoofFontFingerprint": false,
    "spoofMediaDevices": true,
    "timeZone": "US/Pacific",
    "trackingProtectionMode": "always",
    "webRTCPolicy": "default",
    "webSockets": "allow_all"
  },
  "profile": {
    "selected": "linux",
    "interval": {
      "option": 0,
      "min": 1,
      "max": 1
    },
    "showProfileOnIcon": false
  },
  "version": "0.22.61.1",
  "whitelist": {
    "enabledContextMenu": false,
    "defaultProfile": "none",
    "rules": []
  }
}

Context (Environment)

FF 129.0

[sereneblue]

Hi @gcb, I've narrowed the issue to timezone spoofing. For now, you should disable it on Google Flights. Timezone spoofing can cause some tabs to crash.

[gcb]

@sereneblue indeed setting timezone to 'default' worked around it! thank you.

is this already being tracked somewhere? I failed to find anything but would like to take a look at the code later this week.

[sereneblue]

@gcb There are a few Github issues related to timezone spoofing. For other Google sites, it's mentioned on the wiki: https://sereneblue.github.io/chameleon/wiki/known-issues. Timezone spoofing works by monkeypatching the native Date object. It's a "hack" that is the cause of a lot of issues and will likely be removed in Chameleon v0.30.0.