Version 64.0beta, first offered to Beta channel users on October 23, 2018
People expect websites to work regardless of the device or browser they are using. When a site works in one browser but not another, that is most likely a web compatibility bug that we want to know about. Users can report issues using a menu item in Firefox for Android Beta.
Downloaded files are no longer deleted when uninstalling Firefox (note that this only applies to files downloaded after this update)