I'm attempting to set the filter on some of my columns to Multi, just like the demo at https://demos.telerik.com/aspnet-mvc/grid/filter-multi-checkboxes shows.
I have tried it with and without an ItemTemplate, with and without Search, with and without a BindTo, and just about anything else I can think of. The filter only ever shows a text box with the button opening a dropdown for equals/contains/starts with/etc, never the checkboxes expected.
I'm using version 2017.3.1026.
Why does this not work like the demo?