Looks like its a failing because of a blocked cross-origin request. Firefox must be interpreting the CORS settings for the site differently than Chrome. Configu

Looks like its a failing because of a blocked cross-origin request. Firefox must be interpreting the CORS settings for the site differently than Chrome. Configuring CORS correctly across multiple browsers is hard! Edit: looks like the cause for me was because of Facebook Container blocking the cross-origin request to a Facebook domain.