It's quite stable. Current Dev version has a bug where it sometimes won't maximize if you click on the icon in the Taskbar. You have to click on the preview window. Bugs are expected of course.I have appcheck antiransomware free installed, wich has exploit guard for MS edge...you think that causes it?
Anyways even without the exploit guardian brought by microsoft, do you think edge developer / canary are enough stable to use for banking/ browsing and i can have peace of mind of removing chrome