+1
I also tried all different combinations of field types for 3 fields
the three as defined by the network are a textual username password (both of these work) , and a numeric ID (which does't, no matter how i define that field).
what happens is that the username is filled, but instead of the ID (i also tried rearranging their order inside Enpass)
i also deleted the saved login in firefox before all of these tests