"When Abrowser starts" option is ignored (no way to show blank or home page on browser startup)

Mozilla Abrowser 7.0.1

Steps to reproduce:

1. Check that browser is not running.

ps axww | fgrep -i -e'fire' -e'abro'

2. Rename mozilla config folder to a temporary name.

mv -i .mozilla mozilla-hidden

3. Start abrowser. It should start with clean configuration.

4. Abrowser / Preferences / Preferences / General / Startup / When Abrowser starts. Choose "Show a blank page" here (or "Show my home page").

5. Go to some page that is different from a blank page (or you home page).

Ctrl+L
http://fsf.org

6. Quit the browser and check the process stopped:

Ctrl+Q
ps axww | fgrep -i -e'fire' -e'abro'

7. Start abrowser again.

I expect to see a blank page (or my home page) at this point. I see fsf.org page, instead.

In Trisquel 4.5 it worked okay.