Currently, when you create a password item using the "Save All Entered Data" from the LastPass extension, you get an item with a number of custom fields. The problem is that when you try to see that item in the android application, you can only see two fields (username and password). In my case, I have an item that has one username field and 2 password fields, and I am not able to see the second field.
I'm not sure if this is a feature request or a bug. IMO it's a bug, but the support team told me to post it here as an improvement idea.