Our clients are requesting that the search in the multiselect look like the search in the dropdownlist. They want it to be in the list that opens rather than in the value box and want a consistent operation and look. This should be an option that can be set when initializing the multi-select. I attempted this using the forum post below but it is quite buggy and requires a lot of modifications. 

https://www.telerik.com/forums/make-filter-in-multiselect-look-like-filter-in-dropdownlist