Comment 4 for bug 1721965

Tinkered around a bit more and it really looks there is some weird bug.
The Ubuntu Firefox modifications set the home page three times, each time with pref():
startup.homepage_override_url
startup.homepage_welcome_url
browser.startup.homepage

Would it be acceptable as an workaround still to use defaultPref() until this is fixed?
You would get the regular Ubuntu start page instead of the UM page, yet user choice is respected if one does change the homepage.
Or at least provide a fix in the Welcome application if that is possible