There is a thread from July/August last year with the same issue but no resolution mentioned.
I go to the following site:
when I click in one the the username or password fields and press ctrl+\, the search and other items menu shows up.
If I click on the 1password option in this menu, then the first item is ACT which when selected fills in my info.
If I click on the 1password icon in menubar, ACT is also the first item.
Additional, when I fill in the info and select Save New Login... from the settings in the icon from menubar, it does NOT create or attempt to create a new login.
I am running firefox 36.0.1 on Windows 7x64.
Firefox plugin 4.2.5
I am attempting to convert from Lastpass which I have used for several years, but rethinking due to a number of little issues I keep bumping into.
I use a Mac, Windows and ios devices and need to keep all in sync.