I have also sent feedback on this recently since I have similar style (a filter field above a repeating group) at http://bubble.is/cpa
it would be nice if the AutoComplete box was also returning a list of the matching items that you could bind to the repeating group. That way as you typed it would show only matches in the repeating group
would love to use autocomplete instead since it hints on what more you can type in the filter (it is not useful only for selecting a single item that is)
now I use the contains function and a simple textbox and I also have the issue that “contains” only does per-word matching, not per substring:
Contains filter only searches for words (haven’t gotten a reply on that one)