The additional column is the FX column. Add a text function to that object and you’ll see an icon appear in it. This is a new feature of v7 user text that identifies when a User Text value is powered by a text field function.
As to the auto sizing, it will likely remain the way it is in v6 as it is or is not broken depending on which user you ask. Some want it to always auto size while you yourself do not for this case (understandable). This means some additional code would need to be added to host a on/off for the autosize, this is definitely trivial but probably not in the scope of v6 maintenance at this point.