When the new user experience for the Images and Files section in Marketo was introduced, an additional change was made to the way searching for files works. In the previous user experience, the file search works using a contains filter: so long as the string being searched was somewhere in the file name or extension, the file would be returned. 

The update to the user experience switches this behavior, so now any search in the Image and Files section only searches with a "starts with" criteria. As a result, several common use cases, such as searching for brand keywords in files or finding files by extension (e.g., pdf, js) now are no longer possible. There is also, as far as I can tell, no wildcard search support that would still enable the use of starts with searching.

Could we please get this functionality restored in the new user experience?