The "key" to the issue is a combination of FF "private browsing mode" and the "clear cookies" setting. It seems that LP does not save any settings when the Private Browsing Mode function is checked. If you insist on this setting, forget the use of LP in FF, period, until they fix it.

However, when "Private Browsing" is unchecked and the "cookies" box is unchecked in the "Clear History When FireFox Closes > Settings", LP seems to operate with full functionality. If you can live with LP not launching the Log On page when you start the FF browser, you can leave "cookies"checked and log on to LP after you launch FF via the "add-on" icon. My LP log-on page launched with my UN saved and only asking for the master PW. After sign-on, LP launched the vault in my preferred view setting. Other functionality throughout the program remained.

So, here is the task for LasPass tech support:

1. Fix the LP program so it works in FF "Private Browsing" mode.
2. Fix the LP program so it works when FF is set to delete cookies when FF closes.
3. Fix LP to function when you enter the LP domain in the " Allow cookies from websites > exceptions" entry.