Cannot login to glip unless I use incognito mode

XMLHttpRequest cannot load https://aws01-g01-gsx45.glip.com/socket.io/?presence=&EIO=3&transport=polling&t=LsOxa8G. The value of the 'Access-Control-Allow-Origin' header in the response must not be the wildcard '*' when the request's credentials mode is 'include'. Origin 'https://app.glip.com' is therefore not allowed access. The credentials mode of requests initiated by the XMLHttpRequest is controlled by the withCredentials attribute.