Dropdown Filtering Change

Did the functionality of the dropdown change? I now have dropdowns that don't filter. It looks like I can only get dropdowns to filter if the value property is an indexed column. Is that the case now?

There are no changes in the DropDown filtering functionality.

Yes, it was my mistake in how I set up the query...If the query isn't set up correctly, AllowFiltering="true" doesn't work and can even give an unable to load error...