It has been happening since the last few Beta updates, begins from the version which had a bug that Chrome plugin could not 'Save Login', my 1Password will not show any new item until I restart the whole thing. So it had been saved, but 1Password did not reload.
And the Chrome 'Save Login' is still buggy too, I clicked it once the window did not disappeared so I click again, and now I got two identical items in my 1Password.
1Password Version: 6.8.BETA-469
Extension Version: 18.104.22.168
OS Version: Windows 10 Pro
Sync Type: Not Provided