Contact Manager not showing extension type correctly

I just recently started using the module “Contact Manager” to be able to group contacts for using the data in a shared phonebook. Works great! The one thing about this module that doesn’'t work is that the extension type doesn’t seem to be saved or shown correctly on the edit screen. When I select “Home” it is saved:

But when I go to the edit screen:

There have be a couple of updates the last few weeks, but this bug seems to stay.

Confirmed, I have made a bug report and I am looking at it now.