My biggest gripe with Firefox is that it doesn't support MIDIAccess. So any web app that works with an electronic piano, doesn't work. They've been saying they are working on it for years. Works in Chrome, Brave, Opera, Edge, etc. https://developer.mozilla.org/en-US/docs/Web/API/MIDIAccess https://bugzilla.mozilla.org/show_bug.cgi?id=836897 It's actually pretty bizarre since the basic functionality (hit a note on the…
Your biggest problem is that it doesn't work with a MIDI keyboard? Ok? I have to ask why this is so important? What is the use case here?
Same goes for other things. WebGl is very rarely useful for me. But if I liked playing (or developing) games, it would be awesome if the browser allowed that sort of thing rather than forcing developers to build for a specific native platform. So an immense amount of work has gone into webGl, even though it appeals to a fairly small subset of users right now.
I'd guess you could imagine desktop apps that use a midi keyboard. Like, ones to learn piano, or otherwise do interesting musical stuff. I mean, they have WebAudio, but its usefulness is limited if they can't do anything with a keyboard.
In my case, I develop a web app that does music stuff. (and it actually has to be a web app because of the way it uses YouTube) It's disappointing that I have to say "Chrome/Blink only."