Versions 40 through 49
Firefox 43 is the first 64-bit version. https://blog.mozilla.org/futur...
Everything that this version of Firefox can be expected to do. The browser performs well.
YouTube in 4K performs quite well, and 1080p is perfectly smooth.
What does not
What was not tested
Probably many things. I did not install Flash to test that.
Out of the box on Wine 4.9, HTML5Test gives Firefox 49.0.2 (both 32-bit and 64-bit) a 463 out of 555 possible points.
Sometimes the tabs appear underneath the window title bar, and sometimes with distorted background coloring, but this issue goes away if you simply resize the window.
|Operating system||Test date||Wine version||Installs?||Runs?||Used|
|Current||Ubuntu 18.04 "Bionic" amd64 (+variants like Kubuntu)||May 29 2019||4.9||Yes||Yes||No||Platinum||Aaron Franke|
|Show||Ubuntu 16.04 "Xenial" amd64 (+ variants like Kubuntu)||Jul 30 2017||2.13||Yes||Yes||Silver||Aaron Franke|
|Show||Ubuntu 14.04 "Trusty" amd64 (+ variants like Kubuntu)||Dec 21 2015||1.8||Yes||Yes||Silver||Jeff D. Hanson|