When importing a family (for instance, a structural column) with multiple types, the "Specify Types" dialogue box appears. This allows you to import specific types from a family, rather than an entire family. These types are organized in a table with their identifying parameters. Selecting the drop-down menu associated with a given parameter allows you to filter the family types according to set values of that parameter.
The issue: the order of this list appears to be bugged - the parameters are sorted alphabetically, not numerically. As the attached example illustrates, sorting a W-Wide Flange Steel Column by the dimension parameter "d" makes the values increase in the following order:
0' 10 1/2"
0' 10 13/128"
0' 10 205/256"
...
0' 10"
0' 11 125/128"
0' 11 13/128"
...
0' 4 41/256"
0' 5 115/128"
0' 5 19/128"
...
You get the idea. It would be much more useful if these values were sorted numerically. This is a very minor issue, but can be a bit tiring to deal with regularly.