I know. I've been burnt before by Mozilla and Google. Brave will also mess up eventually. I'm just praying that there will be another good browser to hop to when that occurs!
It doesn't work. As in, can't render some perfectly renderable sites correctly. It seems Microsoft is chronically bad at making browsers, even when using a good ready-made engine.
What site in particular are you having trouble with? I haven't found a single problem in the few months it's been released.