Why doesn't Looker data studio dropdown control filter immediately instead of having to click outside the dropdown?

[Katybird]

The dropdown list control filter used to filter immediately vs having to click somewhere outside the filter dropdown to show any filter effect. In otherwords, you could check one dropdown item, see the filtered list, click another filter, see the effect of the combined filters, and so on. If you use the Fixed Size List instead of the Dropdown List, the filter works as before and as desired. Is there a way to get the Dropdown Filter control to work like the filtering for the Fixed List Filter control like it used to?