I heard good things about Edge recently and thought that I should give it a try for a few days.

I’ve opened the same pdf file in multiple Edge windows and and tabs, each scrolled to a different page.

#1
The middle-mouse button scrolling is broken on half of the windows and tabs. You press the button, you see the scroll mouse curser. But it doesn’t scroll.

#2
Scrolling horizontally to an area which wasn’t visible before, the content there is extremely blurry. Scrolling vertically to different pages doesn’t fix it. Is it the pdf? No. It’s just Edge. Zoom in and out again and the blurriness is fixed for now. Until it comes back later on a random page.

#3
Duplicate another tab and suddenly it crashes all of the tabs and windows of Edge. Now I need to open them all again and scroll to the positions that they were before…

If you think that it was just a one time issue, you are wrong. All of them happened multiple times and after Windows reboots.

I’m back to Firefox again.