I suggest you make it so you can see attachments full filenames.
The attachment filenames are truncated so it is impossible to tell which file is which if you have attachments with the same start to the filename.
Blaine Shaw commented
Agreed! This is taking up way too much real estate to tell me what I already know. I know I attached a PDF, now I need to read the filenames to see if I got them all, etc. This is a dealbreaker for me, so I am just going to stay in 2011 version of Outlook for now. This program is to help me work faster and smarter. They just dumbed it down.
Agreed! Not sure why anyone thought a larger icon, showing less information, was a good idea. Almost every single attachment I have has a longer filename than can be displayed. It's especially frustrating when you have several attachments with the same first part of their filenames.