Want a dozen tabs? No problem, just don't expect to be able to switch to the ones on the right because the hit boxes for selecting the tabs are hidden behind the hit box for minimizing the window. Want to resize the window? No problem, just don't try to do it by clicking on the top edge of the window because the hit box for resizing the window is hidden behind the hit boxes for selecting tabs. Want to set the default search engine to google or anything else? No problem, just don't expect to search for anything with a dot in the name because the unbelievably poorly written regex for detecting URLs overrides the search engine behavior in the address bar, preventing your search from hitting the search engine.
The list of unbelievable simple, horribly frustrating usability issues is so long and so easy to encounter, I refuse to believe anyone on the Edge team actually uses this thing.
Oh and it crashes constantly. Did I mention that it crashes constantly? Which is a shame because In my opinion it has the nicest developer toolset of any of the major browsers.