GCP console issues with Firefox

While doing the timed qwiklabs google cloud platform assessments on coursera, I found that google cloud shell was taking a lot of time to come up on Firefox. In fact, perhaps it was not coming up at all. Initially I tried the workaround of using the google cloud sdk locally and running gcloud commands from a terminal. Later, found that the cloud shell opens fine when Chrome is used instead of Firefox. So, this adds to the list of google products which don't work properly on Firefox. Can anyone else see some parallels to the bad old days of browser wars with Microsoft?