I'm using 3.8.7 (updated this morning) and I'm having trouble seeing changes made within the main 1P application correctly display in Safari extension under Lion 10.7.1.
I deleted one of two credit card information on the main 1P application, then deleted the application's trash. All of this while Safari is closed. So I when go to a shopping site and want to enter my credit card information, I then open the 1P extension and found the deleted credit card information is still there.
Tried: redownload the main 1P application from your Web site and replace inside my app folder, Quit and discard Safari windows, Flush 1P cache and Restart Agent to Restart Helper and still the old credit card information is still display inside the Safari extension.
1Password Extension 3.8.5
Lion 10.7.1 on MBP 13-inch 2010