Not just cross-brower, but its still important to test unique client operating systems as well. Else you get weird crap like this: https://www.reddit.com/r/lin

Not just cross-brower, but its still important to test unique client operating systems as well. Else you get weird crap like this: https://www.reddit.com/r/linuxquestions/comments/yfjaa1/disney_stopped_working_on_each_of_my_linux/ https://www.reddit.com/r/linuxquestions/comments/yfjaa1/disn... I just ran into this bug myself like two days ago, when Disney+ just up and quit working. And even better, if you apply the UA string hack to work around that, it breaks Netflix! I had to, for the moment, install a browser extension that allows persistent site-specific UA string overriding. And sure, that works as such, but c'mon... this is bullshit. People, test your dang websites on more than Chrome on Windows for FSM's sake.