I reported a very serious one to Edge recently and the team told me they would "backlog it and might be on a future release". Chrome had already patched it and

I reported a very serious one to Edge recently and the team told me they would "backlog it and might be on a future release". Chrome had already patched it and Firefox never had it. (It was related to incorrect DOM spec implementation of document inheritance allowing cookie access from anywhere). I'll do a full write up and blog it when I'm back from vacation but to summarize I was really unimpressed by the team at Edge and Microsoft Security.