1. open 1p4 extention in FF (clicking key button)
2. click search
3. search for twitter of facebook (in my case)
result: logged in, but 1p4 prompts dialog to unlock and save new login
You might try the following steps (in order of increasing inconvenience) to resolve the problem:
Restarting the 1Password Helper (on the Help menu in 1Password).
Repairing your 1Password data folder (on the File menu in 1Password).
Removing (in Firefox) and re-installing (in 1Password) the extension for Firefox.
Uninstalling and re-installing Firefox itself, and re-installing the extension for Firefox.
Please let us know whether any (and which) of these steps works for you, @redcat2102.