Multiple numbers of same type supported in phones but not communication center
It is possible to add multiple numbers of the same type in the contacts on many of your phone models, however currently Communication center will only show the first number of a type. This means Communication Center is currently inadequate for managing contacts data if you make use of multiple numbers of the same type. You could argue that this is a suggestion rather than a bug, but I think not being able to access all the contact data on the phone is a bug.