Not sure I understand the issue here so maybe you can answer the following and try some of these suggestions, failing that log a call with Customer Support. Pins don't usually carry a Description property, by default these attach to the symbol. So is the user selecting the Pin Symbol or the 'pin' of the symbol (excluding graphics). If the pin itself is selected then usually you see Name, ID, Direction, Pin Number and Pin Type. It all depends on what properties you apply to the pins.
If you have the description property attached to the pin, then it may indicate that the symbols in the schematic are out of date with the library definition. Is the Flag out-of-date symbols option on in the Setup - Settings - Advanced section of DxD for this user? Do the symbols show as out-of-date? Do you have Pin Description as a Pin Property?
These pins do carry a Pin Description property. They are connector symbols translated from Design Capture.
As I said earlier, this is only a problem on one project. All other projects work properly.
When you select the pins in any other project, pin descriptions do show up. However, when you select the pins in the problematic project, pin descriptions do not show up.
I'll have to open up a service request with Mentor.