They even got rid of that search bar, haha.
Only fonts and the scroll bars seem a bit old school compared to Chrome.
Also, WhatsApp Web keeps logging me out.
Chrome has a bunch of bugs related to font-rendering on Windows, e.g. https://crbug.com/414307. I'm not sure why switching to DirectWrite didn't just fix these bugs, but subjectively appearance-wise on Windows, Firefox > Edge > Chrome.
To me it seemed like the input font here on HN could need a bit more hinting in FF.
It's actually configurable by the user. I like having it on the side, so I added it back.
(Tested on Firefox 55.0.2/Linux)
Cheers. :)
This is an issue on my Arch Linux laptop, but not at work using Ubuntu. Both run Firefox nightly. Been going nuts with this issue!