When emailing a PDF, outlook contacts do not auto populate/select as I type their name

To be more precise, these are steps I would perform:

Open a PDF

Click on the Mail icon

When a new outlook email window appears, i'll select To:

Then select an address book

As I type a recipients name, the selection does not automatically jump to that recipients name, unless I hit enter.  I used to be able to just type multiple names and it would jump right to that person so I can add them to the email.

It works in outlook outside of Adobe and worked in the old version of Adobe.  Any suggestions would be appreciated.