Can't search for short names in Friends
When searching in the Friends window, a wildcard search takes place on the entered text. The search results are limited to 10 rows.
When searching for a short name, this can result in being completely unable to search for that player because other wildcard matches come up first in the list, even though you have already typed the entire name you are searching for.
For example if you search for "Ninja", you are unable to pull up that user in the Friends search because other "ninja" variants come up as the first 10 results. There is no way to get enough search results, or enter anything more, to find a user in this case.