The latest major release is a mess. The plugin tries on way too many input fields to suggest 1Password entries. For example, on the site of a railway company, it wants to complete the input fields for departure and destination stations.
Using the browser's autosuggested values for previously entered values are inaccessible with the keyboard because it prefers to go through the items in 1Password even when I don't need to enter my credentials or payment details. Combined with the urge to pop up in completely irrelevant input fields, it wants me to go back to the previous version.
Ironically it did not see the password fields in the sign up form to create a Firefox account to write this review.