When I turn on Show Component Descriptions in the assembly tree display menu, it changes a bunch of my part numbers from [part number]<[instance]> to [part number]-[instance]<instance>. E.g. For a part that normally shows as 1234-01-2<1> it changes to 1234-01-2-1<1>. It only seems to happen with certain parts, note how T-Slot Stud doesn't get changed below.
How do I keep that from happening? It makes things really confusing.