https://twitter.com/BrendanEich/status/1217512049716035584/p...
https://twitter.com/BrendanEich/status/1217512049716035584/p...
For example just look at the alert popups[0], or the non native contextual menus, or the video pop icon. The UI is full of little quirks like that. The tab bar is by far the ugliest one of all current browsers, at least on macOS.
It also misses important features such as multilingual spell checking. For people writing in multiple languages it's a real PITA. I know this functionality can be added with an extension but it slows down FF too much IMO.
It's an issue that affects anyone that writes in multiple languages. This accounts for the majority of internet users in the world since they write at least in their own language and English. This is not an edge case that affects 10% of users.
Like I already explained, it can't be solved properly with an extension. The ones that try to solve it slow down FF. This has to be solved at the native level, not in JS.