For what it's worth, and setting aside opinions on the design itself, at least https://dropbox.design/ never steals focus or disables core navigation keys in frustrating, alternating ways.
I don't understand this comment. That page removes the ability to scroll via pageup/down, via arrow keys, via spacebar, and via a scroll-bar on the right (even when force-enabled via operating system settings). It appears that the only way to scroll is via mouse wheel. How is that not disabling core navigation in a frustrating way?
Interesting. They all work fine for me. I wonder why?
I have tested on Firefox 59 and Chrome 65 in Linux.
For me they didn't work until I clicked in the page. Chrome 60 and Firefox 58 on Linux.
Doesn't that just mean your browser window didn't have focus? I can scroll on apps in the background with scroll wheel but not arrow keys, etc.. That's just an OS thing
No, the window and tab were focused. It would be that the scrollable element wasn't focused.