Privacy Badger breaks api.netlify.com

[kaganjd]

What is your browser and browser version?

Firefox, 75.0 (64-bit)

What is broken and where?

When the Privacy Badger slider for api.netlify.com is on red, visiting my own Netlify site dashboard at https://app.netlify.com/sites/MY-NETLIFY-SITE-NAME/overview shows this error page:

Moving the slider for api.netlify.com to yellow lets me see my site information:

What is the "culprit" domain?

api.netlify.com

What is your debug output for this domain?

**** ACTION_MAP for api.netlify.com
api.netlify.com {
  "userAction": "user_cookieblock",
  "dnt": false,
  "heuristicAction": "block",
  "nextUpdateTime": 1586950464973
}
**** SNITCH_MAP for api.netlify.com
api.netlify.com [
  "app.netlify.com",
  "gohugo.io"
]

[ghostwords]

Hello and thank you for the report!

Looks like Privacy Badger blocks api.netlify.com on app.netlify.com, which should never happen since the two domains are trivially first-party to each other (they have a common base domain). This seems like another instance where Privacy Badger is confused about what site it is actually on.

Previously: #1144

Possibly related: #2521

[kaganjd]

Thanks for taking a look. Let me know if I can provide any other info.