I've seen this issue for quite a while now. When I'm in 1P mini and select an item and do either view or edit, 1Password app opens but does not go to the item that I picked in 1P mini. If I view/edit an item in 1P mini, it should open that item in 1P desktop.
1Password Version: 6.6.416d
Extension Version: Not Provided
OS Version: Windows 10 x64
Sync Type: Not Provided