Requester list

I just imported all the requester from my Active Directory.

However, when I want to create a new request, some of the users does not show the Name so, I could not select them as the requester. This is shown on Image1.png.

If I refresh the page, for instance, changing the number of display name per page, I shows the Name of the requester. However, I am not able to select it as the requester. This is shown on Image2.png

Under the requester list, it shows everything fine. This is shown on Image3.png

I send an e-mail to support@adventnet.com (Request # 26435)and they told me that "Currently we have restricted the Requesters name to 16 Characters. We will address this issue in our future updates." However, I have users names longer than that and they work fine.