I use TouchID for 1Password on my iPhone 6, and I have the app set to prompt for the master password only after device restarts. However, the app asks for my master password anyway after I haven't opened it for a few hours, with no device restarts.
I have checked and double checked that my settings are correct: under Settings > Advanced > Security > Require Master Password, my configuration is set to "After Device Restart".
I rely on TouchID for 1Password because when in a public place, I do not want to be seen typing my master password one character at a time. I'd be very grateful for this bug to be fixed.
1Password Version: 6.4.1
Extension Version: Not Provided
OS Version: iOS 9.3.2
Sync Type: Not Provided