Just noticed two issues. I was trying to copy the number of my credit card and it just wouldn't work. I'd highlight the number, tap copy. Then 3D touch the edge to switch to the other app and paste, and it would paste the security code. Then another bug was when I was coming back again with the 3D touch gesture, 1Password wouldn't be locked. The info is visible and then it "locks". But the animation locks and immediately animates the unlock again. Then the TouchID prompt shows again on top of the unlocked app. I've been able to reproduce this by simply going to an item, 3D touch to another app and back again. Just press hard on the left edge and swipe all the way to the right so you skip the multitasking view and jump straight into the other app.
1Password Version: 6.10 (61000006)
Extension Version: Not Provided
OS Version: iOS 11.1 beta 5
Sync Type: 1Password account