I was using the new Spotlight Search feature to try to locate my Instapaper login info and Spotlight search displayed multiple results making it seem as if there was multiple Instapaper logins in my vault, when in fact there is only one. Clicking on the first three opened 1Password to the list of all my logins, not the specific Insapaper entry. Only the fourth in the list opened 1Password to my Instapaper info. I have used Spotlight Search to locate other login info and Instapaper is the only search where Spotlight returned multiple results.
I'm not sure if this is an issue with 1Password or something in Spotlight Search.
I'm running beta 600016 and iOS 9 on an iPhone 5. I also have the same beta on my iPad but have not had a chance to see if it does the same with Instapaper. I will try it later and let you know what it does.