• VS Code Version: 1.47.0
• Log file (set "trace": true in launch config): vscode-debugadapter-0.json.gz (I know it’s broken, but I tried twice.)
• vscode-chrome-debug version: 4.12.9

What I did

1. Save launch.json with the following

{
  "version": "0.2.0",
  "configurations": [
    {
      "type": "chrome",
      "request": "launch",
      "name": "Launch Chrome against localhost",
      "url": "http://localhost:8080",
      "webRoot": "${workspaceFolder}",
      "userDataDir": "${workspaceFolder}/.vscode/chrome",
      "trace": true
    }
  ]
}

1. Press F5

What I expected

Normal launch

What I got

Additional context

4.12.8 doesn’t have this problem. It may be a regression.