Yeah I noticed this as well yesterday.
I'd like to see them put the date uploaded there so you can tell when it was posted.
As far as the search function is concerned, to get an author search to work, the author's name has to be in all lower case with a dash between the first and last name.
For example, here's one author's listing URL.
https://zoboko.com/author/elliot-silvestri
If the author has initials, it may take a few tries to see how they parse the name.
For example, C.K. Ralston is as follows.
https://zoboko.com/author/ck-ralston